Jess and LM, two siblings with pent-up desires, find themselves alone in the house. Jess, a curious teen, starts exploring her body in the bathroom, her fingers dancing over her clit and ass. LM, overhearing, barges in, catching Jess mid-act. They argue, but the tension is palpable. Later, they make amends, deciding to masturbate openly in front of each other. Jess's eyes widen as she takes in LM's thick, hard cock. She fantasizes about feeling him inside her, but their moment is cut short by an unexpected interruption.