When the "Patient Code" of the mental hospital becomes the law of survival, and those who violate it are not "treated" but completely annihilated, this is the final mental hospital. Former night watchman Qi Qiye discovered here that the so-called "patient" was actually a god in ancient mythology who fell out of control. Within ten days, he had to struggle to survive in the cloister where "silence is death" and the sanatorium where "the flow of time is a mystery". But the deeper he goes, the more he discovers a terrifying truth: the hospital itself may be the one that needs to be "cured"...