After the college entrance exams, Rao Tian was trapped in a warehouse. On the night of his coming-of-age, he turned into a werewolf under the full moon. At the same time, Li Xian, a new member of the Demon Extermination Bureau, was attacked by the werewolf (Rao Tian) while patrolling. This attack started a hunt by the Bureau for the werewolf. Rao Tian was soon being chased by many forces. He had to hide his werewolf identity.