Qingcheng (Li Yitong) vows to fulfill her duty as the king of all monsters, manage the order of the monster world, and practice her own skills. Her powerful aura makes all monsters submit. Mingxia (Zhang Zhehan), who has lost his memory, is determined to become a monster catcher because of his good brother. He kills all monsters. The two opposing people meet again and fall in love and hate each other because of their identities. At the same time, Mingxia vaguely remembers that he once loved a girl but can't remember her face. Yao Bitao (Kan Qingzi) takes the opportunity to pursue Mingxia and uses all her tricks to make Mingxia think that they were in love. The relationship between Qingcheng and Mingxia becomes more tense.