Eriko and her husband visit his family home, where they discover that his younger brother has been single-handedly caring for their father. Resentful of the privileges his older brother has always enjoyed, the younger brother begins to develop twisted feelings toward Eriko when she offers to help with the caregiving. Overwhelmed by the stress of nursing and his growing bitterness, he starts forcing inappropriate acts upon her. His actions grow increasingly obsessive, and exploiting his position as her brother-in-law, he repeatedly rapes her. Her body gradually breaks down, and her mind succumbs to utter devastation...