One day, when three guys and one girl wake up in the morning, they're all in a small room filled with the white powder, naked. Why were they gathered? What does this room mean? Who brought them here? How to escape from it?

Seiji is a third generation "Gosei kai" gang member. He works to build up the group's strength. Meanwhile, a journalist investigates a case that occurred 19 years ago. He meets Hayato, Daisuke and Asami.