<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#Cover" roleURI="http://spacs/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedBalanceSheets" roleURI="http://spacs/role/CondensedBalanceSheets" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedBalanceSheetsParenthetical" roleURI="http://spacs/role/CondensedBalanceSheetsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedStatementOfOperations" roleURI="http://spacs/role/CondensedStatementOfOperations" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedStatementOfChangesInShareholdersDeficit" roleURI="http://spacs/role/CondensedStatementOfChangesInShareholdersDeficit" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedStatementOfChangesInShareholdersDeficitParenthetical" roleURI="http://spacs/role/CondensedStatementOfChangesInShareholdersDeficitParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CondensedStatementOfCashFlows" roleURI="http://spacs/role/CondensedStatementOfCashFlows" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#DescriptionOfOrganizationAndBusinessOperations" roleURI="http://spacs/role/DescriptionOfOrganizationAndBusinessOperations" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SummaryOfSignificantAccountingPolicies" roleURI="http://spacs/role/SummaryOfSignificantAccountingPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#PublicOffering" roleURI="http://spacs/role/PublicOffering" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#RelatedPartyTransactions" roleURI="http://spacs/role/RelatedPartyTransactions" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#PrivatePlacementUnitsRestrictedClassOrdinaryShares" roleURI="http://spacs/role/PrivatePlacementUnitsRestrictedClassOrdinaryShares" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CommitmentsAndContingencies" roleURI="http://spacs/role/CommitmentsAndContingencies" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#ShareholdersDeficit" roleURI="http://spacs/role/ShareholdersDeficit" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurements" roleURI="http://spacs/role/FairValueMeasurements" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SegmentInformation" roleURI="http://spacs/role/SegmentInformation" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SubsequentEvents" roleURI="http://spacs/role/SubsequentEvents" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://spacs/role/SummaryOfSignificantAccountingPoliciesPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SummaryOfSignificantAccountingPoliciesTables" roleURI="http://spacs/role/SummaryOfSignificantAccountingPoliciesTables" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsTables" roleURI="http://spacs/role/FairValueMeasurementsTables" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SegmentInformationTables" roleURI="http://spacs/role/SegmentInformationTables" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#DescriptionOfOrganizationAndBusinessOperationsDetailsNarrative" roleURI="http://spacs/role/DescriptionOfOrganizationAndBusinessOperationsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SignificantAccountingPoliciesDetails" roleURI="http://spacs/role/SignificantAccountingPoliciesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SignificantAccountingPoliciesDetails1" roleURI="http://spacs/role/SignificantAccountingPoliciesDetails1" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SummaryOfSignificantAccountingPoliciesDetailsNarrative" roleURI="http://spacs/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#PublicOfferingDetailsNarrative" roleURI="http://spacs/role/PublicOfferingDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#RelatedPartyTransactionsDetailsNarrative" roleURI="http://spacs/role/RelatedPartyTransactionsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#PrivatePlacementUnitsRestrictedClassOrdinarySharesDetailsNarrative" roleURI="http://spacs/role/PrivatePlacementUnitsRestrictedClassOrdinarySharesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#CommitmentsAndContingenciesDetailsNarrative" roleURI="http://spacs/role/CommitmentsAndContingenciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#ShareholdersDeficitDetailsNarrative" roleURI="http://spacs/role/ShareholdersDeficitDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsDetails" roleURI="http://spacs/role/FairValueMeasurementsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsDetails1" roleURI="http://spacs/role/FairValueMeasurementsDetails1" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsDetails2" roleURI="http://spacs/role/FairValueMeasurementsDetails2" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsDetails3" roleURI="http://spacs/role/FairValueMeasurementsDetails3" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#FairValueMeasurementsDetailsNarrative" roleURI="http://spacs/role/FairValueMeasurementsDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="spacs-20260331.xsd#SegmentInformationDetails" roleURI="http://spacs/role/SegmentInformationDetails" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedBalanceSheets" xlink:title="00000002 - Statement - CONDENSED BALANCE SHEETS (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="loc_us-gaapCashEquivalentsAtCarryingValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCashEquivalentsAtCarryingValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_DueFromSponsor" xlink:label="loc_spacsDueFromSponsor" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_spacsDueFromSponsor" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaapPrepaidExpenseCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapPrepaidExpenseCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidInsurance" xlink:label="loc_us-gaapPrepaidInsurance" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapPrepaidInsurance" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredOfferingCosts" xlink:label="loc_us-gaapDeferredOfferingCosts" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapDeferredOfferingCosts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsAndCash" xlink:label="loc_us-gaapInvestmentsAndCash" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapInvestmentsAndCash" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedMarketingCostsCurrent" xlink:label="loc_us-gaapAccruedMarketingCostsCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedMarketingCostsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_PromissoryNoteRelatedParty" xlink:label="loc_spacsPromissoryNoteRelatedParty" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_spacsPromissoryNoteRelatedParty" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaapLiabilities" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_DeferredUnderwritingFeePayable" xlink:label="loc_spacsDeferredUnderwritingFeePayable" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_spacsDeferredUnderwritingFeePayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaapPreferredStockValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapPreferredStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaapAdditionalPaidInCapital" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapital" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilities" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital" xlink:label="loc_us-gaapTemporaryEquityValueExcludingAdditionalPaidInCapital" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapTemporaryEquityValueExcludingAdditionalPaidInCapital" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedBalanceSheetsParenthetical" xlink:title="00000003 - Statement - CONDENSED BALANCE SHEETS (Unaudited) (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedStatementOfOperations" xlink:title="00000004 - Statement - CONDENSED STATEMENT OF OPERATIONS (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestAndOtherIncome" xlink:label="loc_us-gaapInterestAndOtherIncome" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapInterestAndOtherIncome" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedStatementOfChangesInShareholdersDeficit" xlink:title="00000005 - Statement - CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS&apos; DEFICIT (Unaudited)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedStatementOfChangesInShareholdersDeficitParenthetical" xlink:title="00000006 - Statement - CONDENSED STATEMENT OF CHANGES IN SHAREHOLDERS&apos; DEFICIT (Unaudited) (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CondensedStatementOfCashFlows" xlink:title="00000007 - Statement - CONDENSED STATEMENT OF CASH FLOWS (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapNetIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestAndOtherIncome" xlink:label="loc_us-gaapInterestAndOtherIncome" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapInterestAndOtherIncome" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidExpensesOther" xlink:label="loc_us-gaapIncreaseDecreaseInPrepaidExpensesOther" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInPrepaidExpensesOther" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccruedLiabilities" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_InvestmentOfCashInTrustAccount" xlink:label="loc_spacsInvestmentOfCashInTrustAccount" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_spacsInvestmentOfCashInTrustAccount" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_ProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" xlink:label="loc_spacsProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_spacsProceedsFromSaleOfUnitsNetOfUnderwritingDiscountsPaid" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:label="loc_us-gaapProceedsFromIssuanceOfPrivatePlacement" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOfPrivatePlacement" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="spacs-20260331.xsd#spacs_UnderwritersReimbursement" xlink:label="loc_spacsUnderwritersReimbursement" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_spacsUnderwritersReimbursement" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfRelatedPartyDebt" xlink:label="loc_us-gaapRepaymentsOfRelatedPartyDebt" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapRepaymentsOfRelatedPartyDebt" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentOfFinancingAndStockIssuanceCosts" xlink:label="loc_us-gaapPaymentOfFinancingAndStockIssuanceCosts" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapPaymentOfFinancingAndStockIssuanceCosts" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/DescriptionOfOrganizationAndBusinessOperations" xlink:title="999013 - Disclosure - Description of Organization and Business Operations" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SummaryOfSignificantAccountingPolicies" xlink:title="999014 - Disclosure - Summary of Significant Accounting Policies" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/PublicOffering" xlink:title="999015 - Disclosure - Public Offering" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/RelatedPartyTransactions" xlink:title="999016 - Disclosure - Related Party Transactions" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/PrivatePlacementUnitsRestrictedClassOrdinaryShares" xlink:title="999017 - Disclosure - Private Placement Units; Restricted Class A Ordinary Shares" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CommitmentsAndContingencies" xlink:title="999018 - Disclosure - Commitments and Contingencies" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/ShareholdersDeficit" xlink:title="999019 - Disclosure - Shareholders&#8217; Deficit" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurements" xlink:title="999020 - Disclosure - Fair Value Measurements" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SegmentInformation" xlink:title="999021 - Disclosure - Segment Information" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SubsequentEvents" xlink:title="999022 - Disclosure - Subsequent Events" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="999023 - Disclosure - Summary of Significant Accounting Policies (Policies)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SummaryOfSignificantAccountingPoliciesTables" xlink:title="999024 - Disclosure - Summary of Significant Accounting Policies (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsTables" xlink:title="999025 - Disclosure - Fair Value Measurements (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SegmentInformationTables" xlink:title="999026 - Disclosure - Segment Information (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/DescriptionOfOrganizationAndBusinessOperationsDetailsNarrative" xlink:title="999027 - Disclosure - Description of Organization and Business Operations (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SignificantAccountingPoliciesDetails" xlink:title="999028 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SignificantAccountingPoliciesDetails1" xlink:title="999029 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details 1)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:title="999030 - Disclosure - Summary of Significant Accounting Policies (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/PublicOfferingDetailsNarrative" xlink:title="999031 - Disclosure - Public Offering (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/RelatedPartyTransactionsDetailsNarrative" xlink:title="999032 - Disclosure - Related Party Transactions (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/PrivatePlacementUnitsRestrictedClassOrdinarySharesDetailsNarrative" xlink:title="999033 - Disclosure - Private Placement Units; Restricted Class A Ordinary Shares (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/CommitmentsAndContingenciesDetailsNarrative" xlink:title="999034 - Disclosure - Commitments and Contingencies (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/ShareholdersDeficitDetailsNarrative" xlink:title="999035 - Disclosure - Shareholders&#8217; Deficit (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsDetails" xlink:title="999036 - Disclosure - Fair Value Measurements (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsDetails1" xlink:title="999037 - Disclosure - Fair Value Measurements (Details 1)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsDetails2" xlink:title="999038 - Disclosure - Fair Value Measurements (Details 2)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsDetails3" xlink:title="999039 - Disclosure - Fair Value Measurements (Details 3)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/FairValueMeasurementsDetailsNarrative" xlink:title="999040 - Disclosure - Fair Value Measurements (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://spacs/role/SegmentInformationDetails" xlink:title="999041 - Disclosure - Segment Information (Details)" />
</link:linkbase>
