The dramatic series revolves around Wangquan Fugui, who has been prepared to become the last demon slayer of the Yiqi Alliance since childhood, encountering Qing Tong, a demon-spider who infiltrates the Wangquan Manor as a spy. Qing Tong's presence allows Fugui to broaden his horizons and change his perspective on demons. Eager for freedom, Fugui's fervor for achieving world peace is gradually ignited. After experiencing extreme pain, he leaves the Wangquan Manor with Qing Tong, embarking on a journey of self-discovery.