Saya Niiyama scolded some neighborhood students for loitering on the street, sparking their resentment. Seeking revenge, the students break into her home while her husband is away. Subjected to relentless daytime and nighttime assaults, Saya is completely dominated both physically and mentally. Just as the abuse continues, her husband returns from a business trip. What Saya does next—broken yet determined—will drastically alter the course of events.