After an accident leads to a misdiagnosis and his admission to a special mental hospital, the protagonist receives a copy of the Patient Rules on his very first day: Don’t look in the mirror at three in the morning. Don’t speak to “doctors” wearing white coats who have no feet. Every Wednesday, you must go to the garden to feed the “pigeons that don’t exist.” Anyone who breaks the rules vanishes in a bizarre fashion, while those who follow them gradually awaken supernatural abilities related to the “rules.” As he investigates further, he discovers that the sanatorium is a trial ground for a “divine descent ritual,” and every patient is a candidate “vessel.” The director is actually the previous successful candidate, now selecting a successor. And Lin Ye’s true identity is, he was the ritual’s “core sacrifice” all along. His 73 failures were all paving the way for him. He must choose between becoming a “god” and remaining “human.”