At a health spa, a man sets his sights on an innocent girl bathing with her father in the men's bath, and when her father leaves, he approaches her and shows her his penis. You'd think she'd look away or be embarrassed, but she's so curious about his penis that she touches it as the man tells her to. When her father returns, he tries to leave, but the daughter, who can't get enough of teasing, follows him... He intended to play a prank on her, but instead he ends up being the one to blame her.