5 male students enrolls at a school that has all female students. The boarding school was formerly an all-girls high school until the new school year. The student council then places the 5 male students in a place known as the prison on charges that they were peeping on the girls in the showers. The 5 male students struggle to escape from the prison. ~~ Based on the manga series with the same name by Hiramoto Akira.

Natsumi (Kie Kitano) moves to Tokyo to enter a fine arts university. In Tokyo, Natsumi meets Ryosuke and they soon become a couple. Ryosuke is a good person, but he doesn’t have a job. Every day he just loafs around. To pay for her living expenses, Natsumi begins work at bar. Natsumi and Ryosuke become estranged from each other. They decide to break up. Natsumi’s book is finally published.