Ryohei Arisu (Kento Yamazaki) has a very good brother. Compared with his brother, he looks even more useless. Fortunately, Ryohei has two good friends, Zhangta Seikawa (Yuuki Morinaga) and Daikichi Karibe (Keita Machida). Whenever Ryohei feels that he has no place to stay at home, Zhangta and Karibe will accompany him. One day, the three were hanging out outside. After a strange flash, the bustling streets of Shibuya suddenly became empty. Just as the three partners looked at each other, the game began. The three people who were forced to participate in the game gradually realized that they were pulled into a terrifying world where the weak are the prey of the strong. Here, only by constantly participating in the game set by the organizer, which is full of death dangers, can they get the opportunity to continue to live. The friendship between the three is also experiencing unprecedented tests in the game.