This Valentine's Day, step-siblings Elias and Melanie find an unusual way to practice their kissing skills - by swapping partners with their friends, Rico and Bailey. In their family living room, the foursome engages in a steamy role-play, each couple taking turns teaching and learning on the couch. Clad in revealing thongs and lingerie, the teens' make-out session quickly escalates, leading to a passionate group-sex exchange that's equal parts fantasy and fucked-up family fun.