Young Cai, alone in his room, decides to relieve his pent-up desires. He strips down, his naive, young body trembling with anticipation. He strokes his hardening cock, eyes closed, imagining unknown pleasures. His grip tightens, his pace quickens, lost in the moment. Suddenly, the creaking floorboard snaps him back to reality. Uma, the family's elder, stands in the doorway, her eyes widening at the sight of Cai's exposed, throbbing member.