WhenamysteriousanddangerouswhirlpoolphenomenonappearsinthetropicsoftheAtlanticOcean,BelkaandStrelka,thefirstastronautsontheirwaybackfromamissiontoSaturn,aresenttoinvestigate.Astheyventuredownintotheswirlingoceandepths,theydiscoveramysteriousUFOattemptingtostealallofEarth'swater.Withthehelpoftheirgoo...