Lin Shen is trapped in the “Corridor of Eternal Night,” where time resets every seven days. He alone retains his memories. Twelve sealed chambers conceal deadly puzzles: reflections turn on their owners in the mirror maze, time runs awry in the hourglass mechanism room, and identities are shrouded in mystery in the personality-swap laboratory... A mysterious “Night Watcher” controls everything, and Lin Shen is its “vessel.” As the cycle repeats, the identities of new participants become eerily entangled with reality, allies turn into enemies in an instant, and fragments of memory reveal a blood-soaked truth. Reality and virtuality intertwine, AI tramples all moral boundaries, and the final key points to none other than his own grave! Every cycle is a battle for life and death; every twist upends what he thought he knew. Mirrors reveal people’s true natures, and time paradoxes tear apart cause and effect. When the “death warrant” arrives for the seventh time, can Lin Shen unravel the ultimate deception?