Maki terrorizes the office with abusive management and is known behind her back as the empress. One night she discovers a costly mistake of her own and pins it on her subordinate Kanzaki to protect her career. Enraged by the false accusation, Kanzaki joins a coworker in plotting revenge. They corner Maki after hours, ignore her attempts to reason with them, and gang-rape her mature body to settle their long-held grudge.