A group of participants who were involved in the "rules cage" for unknown reasons were forced to struggle to survive in strange spaces full of deadly rules. From the closed circular mirror room to the gloomy Theater of the Dead, every level contains hidden murderous intent. The rules are both shackles and the key to breaking the situation. Any omission or misjudgment may trigger death penalty.
The protagonist Lin Yan, together with other participants, faces the threats of terrifying existence such as "prisoners in the mirror" and "phantoms" in a desperate situation where lies and truth are intertwined, solving layers of puzzles and exploring the truth behind the game. Not only do they have to compete with the weird "cage" rules, but they also have to be wary of people's suspicions and monster attacks, looking for a glimmer of hope on the edge of life and death. Every time they pass a level, they are just the beginning of the next more terrifying game.
