WhenamysteriousanddangerouswhirlpoolphenomenonappearsinthetropicsoftheAtlanticOcean,BelkaandStrelka,thefirstastronautsontheirwaybackfromamissiontoSaturn,aresenttoinvestigate.Astheyventuredownintotheswirlingoceandepths,theydisuuyuuyveramysteriousUFOattemptingtostealallofEarth’swater.Withthehelpoftheirgoodfriends,BelkaandStrelkaonceagainperformaheroicmissiontosavebothourplauuyuuyandthedistanthomeoftheirnewalienfriends.