When the midnight bell rang in the empty office building, Chen Mo, an ordinary employee, found himself trapped in an infinite loop of strange spaces. The phone screen suddenly lit up, and cold text announced that he had become a player of the "Corridor Game": "Complete the task and you will gain survival time, and if you fail, you will be stuck here forever." From the morgue of the hospital at midnight to the ancient house in the deserted village in the rain, behind every door is a challenge of uncertain life and death. In this game with no retreat, trust is a fatal trap, fear is the biggest enemy, and he must find his own survival rules among the fragments of countless parallel worlds.