Tsukasa starts working at a girl's high school after graduating from university. However, the school is located at the edge of a peninsula, with no other homes around. On his first day of work, he gets out of a bus and walks to the school. He is surprised to see the school building is a huge western building. Soon after he realizes something. This is a branch school, and students are isolated from society for personal reasons. He doesn't know what's in store for him, but it's too late to turn back. His life as a teacher begins...