In Baisha Street Lunatic Asylum, a mysterious cat-and-mouse game is quietly playing out. The patient, who became insane due to participating in a mysterious game, claims that someone is after him. But Xin, his attending physician, hides an unknown secret.
When he woke up in the lunatic asylum, with a familiar whistle echoing in his ears, he realized that danger was approaching. Heart, this person who was once close to him, now makes him feel strange and frightened. Is she a savior or a participant in this conspiracy?
