The girl named Nikki rougou finds a letter in her locker. She wents to an old school building in Tokio she should meet them at 10 pm. But it was 10:15 pm already so she goes in that old school building and all the doors are looked up. A big screen turns out and there is a boy with a mask. He says" if you want to survive, you have to win the game" the girl didn't understand what he meant and she also was frustrated. She thought the police would come to save her, but No one came. So she went in one of these classrooms, a short time later she heard some steps she was really scared. The steps came closer and closer. A boy came into the room his name was Takashi usui. He tried to calm her down, it came out that he was also kept in hostage. He promised nikki rougou that they will survive it. Together they went out of the room, but what they saw next shooked them, a group of zombies were waiting for them to eat everything of them. Takashi usui had a katana with him, but there were to many of these zombies. On the last minute they heard someone shoot, it was a girl. She helped them. Now three of them have survived. The girl introduced her selve " hi, im nekomi obunaga". The next days they had to survive all the traps.