In an ordinary high school in Japan, 16-year-old Shun Takahataa 16-year-old boy who is bored with life , spends his boring and lengthy youth in class. However, without warning, the teacher's head in front of the blackboard suddenly burst open and blood splattered everywhere. The students in the class were all dumbfounded, and what accompanied the tragedy was an ordinary Bodhidharma tumbler sitting on the podium. Before the students came back to their senses, Bodhidharma played the game of "one, two, three, don't move", and all those who violated the rules were slaughtered. After several rounds of desperate battles, Shun finally pressed the button to end the game before the allotted time. However, at this time, his classroom was already full of blood, and none of his classmates survived.
The scary thing is that the bloody game is not over, and Shun, who has not figured out the situation, escapes from the classroom and meets the childhood sweetheart Akimotothe next class . The two followed Tumbler's instructions to the gym and joined the survivors of the other classes for the second round of the game. Not long after that, the huge Lucky Cat burst into the top, and with its overwhelming stature and strength, it easily slaughtered the contestants wearing mouse costumes in front of them, and there was only one way for them to stop the game, and that was to bell the cat. Throw it from the basketball hoop around the beckoning cat's neck. After a series of setbacks and attempts, the game of Lucky Cat finally came to an end. At the same time, another survivor, Takeshi, who exudes rage and death all over his body,, but this is a terrible character who is willing to kill his own kind in order to survive.
At the same time, similar bizarre incidents have occurred one after another in Japan and even around the world. Behind this series of chaos, it seems that some conspiracy that is difficult for ordinary people to explain is proceeding in an orderly manner. The media, big and small, are tracking reports, and the surviving teenagers are also regarded as "sons of God" on the Internet and are sought after. After two rounds of games, Shun, Ichika, and Tiangu are sucked into the mysterious cube. As expected by Shun and the others, the mysterious game continued, and the appearance of "Little Mustard Seed" opened the prelude to a new round of slaughter. In the process, Shun, with his calm observation and the wisdom of contact, answered the questions of the little mustards correctly, and rescued his junior high school classmate Shoko Takase. In order to obtain the key to the next level, the surviving seven boys and girls must join hands to overcome the next life and death difficulties
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