Su Yexing, an ordinary social worker, accidentally downloaded an APP called "Professional Killer Simulator". He thought it was a high-simulation game, but found that the missions released by the simulator actually existed! From "throwing coins accurately to hit the target" to "sneaking silently to retrieve files", each time a task is completed, physical fitness and skills are bizarrely improved. When the first death mission of "clearing the target" came, he discovered to his horror that this was not a game at all, but reality! He was forced to become the executor in the dark night, and every "accident" that happened caused an uproar in the city. From a rookie to an "accidental" global sensation, he became a mysterious ghost pursued by the police and a legend that the underground world scrambled to win over. He just wants to live a peaceful life, but the simulator is pressing harder and harder, forcing him to stand on top of the world and reveal the shocking secrets hidden behind it...
