Parallel to Blue Star, Zhang Ji, an auxiliary police officer who just emerged from society, was addicted to CFHD games in an Internet cafe. The world was attacked by mysterious meteorites, government centers of various countries were destroyed, and the world fell into chaos. Zhang Ji accidentally activated the doomsday system bound to the CFHD game, but found that the biochemical ghosts in the game had appeared in the real world, and the zombie crisis broke out. Facing the end of the world, Zhang Ji took advantage of the system and gradually grew from an ordinary auxiliary police officer to a leader of survivors. He gained experience points to upgrade by killing zombies, completed tasks to unlock skills, and successfully exchanged CFHD girl group members Yun Youyou, Qing Ya, Xi'er, Yu Mo and Wu Mengmeng as combat partners. In the process of establishing a base and hoarding supplies, Zhang Ji not only has to deal with the evolving zombies and biochemical ghosts, but also competes with other survivor teams for resources, and at the same time fights against the behind-the-scenes Dr. Mafia and his army of biochemical terminators. As his strength increased, Zhang Ji gradually uncovered the truth about the apocalypse and the system, and discovered that this disaster was actually a cross-dimensional survival experiment. At the critical moment of human survival, Zhang Ji must gather all his strength, evolve heroic mercenaries, and launch a final decisive battle with Dr. Pai for dominance in the future of mankind.