<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-09-30</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001821317</issuerCik>
        <issuerName>PERIDOT ACQUISITION CORP.</issuerName>
        <issuerTradingSymbol>PDAC - UN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001833078</rptOwnerCik>
            <rptOwnerName>Arena Capital Advisors, LLC- CA</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., STE. 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001607211</rptOwnerCik>
            <rptOwnerName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001645288</rptOwnerCik>
            <rptOwnerName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001821611</rptOwnerCik>
            <rptOwnerName>Arena Capital Fund, L.P.- Series 3</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001643040</rptOwnerCik>
            <rptOwnerName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001768207</rptOwnerCik>
            <rptOwnerName>Arena Short Duration High Yield Fund, LP- Series E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001821596</rptOwnerCik>
            <rptOwnerName>Arena Capital Fund, L.P.- Series 4</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001826728</rptOwnerCik>
            <rptOwnerName>Arena Capital Fund, L.P.- Series 5</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001826727</rptOwnerCik>
            <rptOwnerName>Arena Capital Fund, L.P.- Series 6</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12121 WILSHIRE BLVD., SUITE 1010</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>CLASS A ORDINARY SHARES</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4806704</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>AS INVESTMENT ADVISER OR GENERAL PARTNER.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>ARENA CAPITAL ADVISORS, LLC, BY SANIJE PERRETT, /s/ SANIJE PERRETTMEMBER, AS INVESTMENT ADVISER TO ADDITIONAL REPORTING PERSONS</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES A, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES B, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES C, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA SHORT DURATION HIGH YIELD FUND, LP - SERIES E, BY:/s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA CAPITAL FUND, LP - SERIES 3, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA CAPITAL FUND, LP - SERIES 4, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA CAPITAL FUND, LP - SERIES 5, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ARENA CAPITAL FUND, LP - SERIES 6, BY: /s/ SANIJE PERRETT, SANIJE PERRETT, PRESIDENT OF GENERAL PARTNER</signatureName>
        <signatureDate>2020-11-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
