Mackenzie Mace gets her hair brushed by Peter Green, her stepbrother, while Gracie Gates, his girlfriend, watches. The mundane task quickly escalates as Mackenzie's moans betray her arousal. Peter's skilled fingers in her hair send jolts of pleasure down her spine, making her pussy ache. Gracie, jealous and turned on, joins in, sucking Peter's cock as he continues to brush Mackenzie's hair. The room fills with the sounds of wet slurps and Mackenzie's breathy gasps. Peter turns Mackenzie around, face-first into Gracie's tits, and fucks her from behind while Gracie makes out with her. The taboo scene reaches its climax as Peter fills Mackenzie's pussy with his cum.