Five years ago, Yun Wangyue, the master of the Bright Moon Cult, was betrayed and plotted against by his junior brother Jiang Hanyue, poisoned, and fell off a ten-thousand-foot cliff. Surviving by a fluke, he received a face-changing technique from his junior sister, transforming into the mundane physician Yuwen Jue to lurk in the pugilist world. On the surface, he is an ordinary little physician who cures illnesses and saves lives, but in reality, he possesses peerless martial arts, secretly investigating a bloody case within the cult and rescuing loyal old subordinates.