故事发生在北宇治高中,黄千久美子(黑泽智也配音)刚刚进入校园,对未知的高中生活充满向往。加藤业月(浅井彩配音)是久美子的同学。在野月的极力劝说下,耳朵柔软的久美子半信半疑地加入了学校的打击乐系。从前,器乐系有着非常辉煌的历史。
Sewoon Shopping Center, the first to distribute pornographic tapes in Qingxichuan! That's where people's erotic stories begin. That year was 1996. Kyeong tae filmed an illegal video with pornographic actor Pan sub in the Sewoon shopping area of Qingxi Street. They met Joo ri who was about to work for an adult agency in Macau with a pornographic film. Kyeong tae and Pan sub are excited that they have the opportunity to win a large sum of money. Kyeong tae handed over a tape to Hyeong soo, who was the source and distributor of their goods, while Hyeong soo signed an agreement without her knowledge and used all the money she had previously saved to sign a contract. Moneylander Soboro discovered and raided the filming site, taking all of Kyeong tae's money and demanding that he pay the remaining amount within three days. As the deadline for the contract approached and three days approached, Qing Tai borrowed money from Hyeong soo, who gave him a Japanese version of a snuff movie and offered him a deal. He accepted without a doubt, but found himself fooled and decided to join the gang. Then he replaced the props and knives on the set with real ones...