Seihou Private High School, also known as Alcatraz, is a 35-year-old prestigious boarding high school. The school is located on a remote island and can only be visited by boat twice a day and almost impossible by foot. The environment seems perfect for school as students cannot do anything except concentrating on their studies. However, a group of friends became upset that they will be losing their youths and try to get away and find freedom.

Adapted from the manga "Seiho High School Men's!!!" (メンズ校) by Izumi Kaneyoshi (和泉かねよし)