The obedient and submissive daughter is being treated as a sexual processing doll by her stepfather and stepbrother. One day during a hot spring trip, taking advantage of her mother's absence, she is left to their whims. Despite her reluctance, unable to resist, she has no choice but to submit. Forced into sex with her stepfather in a family bath, her stepbrother toys with her in their room, repeatedly forcing her to climax. She is further humiliated by receiving a facial of thick semen through oral service. Ordered to masturbate in front of them, she reluctantly complies. Later, she is taken by her stepfather to an outdoor bath and vigorously penetrated with a thick penis, filling her vagina completely.
