The player plays the role of a detective who is commissioned to investigate a campus homicide, but accidentally falls into a different space during the investigation. The player's only goal is to get out of this strange school. In order to reflect the educational environment in Taiwan 20 years ago, the game added a small number of social issues such as [homosexuality], [school bullying], [suicide], [substance abuse], etc. By continuing to explore the game, players can learn about what happened to the students who died in the school. This game is just the beginning of the story. As the story progresses, all the truth will be revealed, which will make the bully sincerely confess what he has done and tell the truth to the victim's family.