In a cramped Brazilian apartment, two young cousins, driven by desire, succumb to their forbidden attraction. The older, more experienced "quatro," takes charge, guiding the eager "cuzinho" into his first gay encounter. The room fills with the sounds of wet, sloppy kisses and the slap of bare skin as they explore each other's bodies, the "cuzinho" moaning in pleasure as the "quatro" strokes his hard, uncut cock.