Oto is a popular and serious female student at school. She serves on the discipline committee and lives a clean and upright life with her boyfriend Makoto, who is also a member of the committee. One day, she witnesses a student from the same school, Sho, on the street. Sho is a problem child who causes violence in the classroom. Later, out of a sense of justice, she goes to Sho's house, only to find that Sho and his brother, the gangster Saji, have taken up residence there. Without even knowing what's going on, Oto is pinned down by them, and is locked in the house, where she becomes the victim of a gruesome sexual act... [Please note that there may be some disturbances in the image and sound, but this is not a defect in the product itself]