In a modern metropolis, a mobile game called "Code Hunting ONline" has become popular in several colleges. However, as long as special conditions are triggered in the game, a bloody side quest line will be opened, joining a death game that completely subverts daily life. This copy of death brought out the darkest wildness in the hearts of some outstanding students, who loved killing and lost themselves in the game. In fact, the game was designed by a mysterious department, and their move was for an unknown purpose...