A writhing mass of naked flesh, the foursome grinds and thrusts in unison, their bodies slick with lubricant and sweat. A man's hands grip a woman's hips, pulling her onto his cock as he pounds into her from behind. Another man lies on his back, a woman straddling him, her breasts bouncing as she rides him. A third woman watches, her fingers buried in her pussy, her eyes locked on the action. She moves closer, her tongue flicking out to lick the sweat from the man's chest. The group shifts, their bodies rearranging like pieces in a puzzle, always seeking more pleasure, more connection, more skin.