A provincial city on the outskirts of Tokyo. Sakura, an honor student at a certain school there, is a serious student with a strong sense of justice. Her family is wealthy, she is good at studying, and after graduation she plans to go to a famous university. Meanwhile, her classmates Suzuki and Kawagoe were once honor students, but they stumbled in their studies and have now become poor students with bad behavior. One day, on the school landing, Sakura scolds Suzuki and Kawagoe for their behavior and looks at them with contempt. Suzuki and Kawagoe tremble with anger and hatred at her attitude. Then during summer vacation... the two delinquents call Sakura into an empty classroom and rape her for 20 days straight...