In order to find out the truth about his sister's death, delivery boy Li Li sneaked into country T to investigate the mysterious organization, but he encountered Ethan, a perverted doctor who controlled the surveillance of the whole city. The two test each other in danger and desire, from the "biting" eccentric hunting game to joining forces to fight against the evil group headed by Ethan's mother. When the extreme control freak learns to be perfect, and when the vengeful orphan girl surrenders her sincerity, this relationship that began with pathological possession eventually becomes the destiny of mutual redemption.