InthesuburbofRiodeJaneiro,thevirginstudentRitinhamarriesthemorallyconservativelowmiddleclasstackycardealerMário,butacoupleofmonthslatershebecomesverydisappointedandboredwiththeirsexuallife.ShehasonenightstandwiththestupidPortuguesebakerMarques,whohasacrushonher,andafriendofMarquestakespicturesofthemhavingsexinhiscottage.WhenRitameetstheblackartistSaulinPedradeGuaratiba,theybecomelovers,andMarquescompletelyjealouswiththesituationdisclosesthepicturestoMário,tearinghispredictableworlddown.