TheTaylor'sfamilydog,Max,iskidnappedbytheevilSirusCaldwell,(ZackWard)CEOofmegacorporationEnvigormax,tobeusedasatestsubjectforanewsuperenergydrink.Whentrialsgoterriblywrong,Maxescapesonlytobetransformedfromhislovableselfinto...''MonsterMutt''!TheTaylorkids,Ashley(RhiannonLeighWryn)&Zach(BillyUnger)trytosavetheirloyalfriendwiththehelpofthescientist,Dr.VictorLloyd(BrianStepanek),whoregretfullyhelpedtransformMax.ThechildrenmusteludetheevilSirusandhishenchwomanNatalya(JulietLandau),whoaredeterminedtocaptureMonsterMutttocompletetheirexperiment!MonsterMutt,isanadventureinbothcomedy&chaosastheTaylorkidsracetofindacurefortheirfurrylovedonebeforeit'stoolate!