Eriko lives a modest life with her husband, a fellow teacher. While her husband is away at a training camp, her husband's students come to visit and ask for her help with their studies. Eriko welcomes them into her home, but this is where the tragedy begins. The students suddenly change and attack Eriko. They violently gang rape her, and Eriko desperately tries to calm them down, but her resistance is in vain as they continue to rape her...