In a cramped Brazilian apartment, a couple and their friends engage in a heated "de-quatro" (four-way) session. The women, "safada" and eager, take turns sucking and fucking their partners, their bodies glistening with sweat and desire. The men, rock-hard, alternate between fucking the women's tight pussies and watching them make out, their asses clapping against flesh. The room echoes with wet, sloppy sounds of sex, as they switch positions, their moans growing louder, until they reach their explosive, simultaneous climax.