London-basedMillionairessEpifania(SophiaLoren)isattractedtoDr.Kabir(MDfromDelhiandPhDfromCalcutta),whoismoreintentontreatingpatients.Whenshepersists,heconfidesinherthathehadmadeacommitmenttohislatewidowedseamstressmotherthathewillwedanywomanwhowillmanagetosurviveonjustRs.500/-,for90days.Shefindsoutthatthissumisequivalenttojust35shillingsbutreadilyacceptsthischallenge.Shealsoinformshimthatherlatefatherhadalsoimposedaconditionthatshemustwedamalewhowillturn￡500into￡15000withinthesameperiod.EpifaniathenfindsemploymentwithanItalianfirm,endsupre-organizing,andturningupthefirmsprofits.Attheendof90days,shegoestomeetKabiranddiscoversthathehasnotonlygivenallthemoneyawaybutalsohasnointerestwhatsoeverinmarryingher.