Ci Yunye is an unruly yet clever servant at the Gansu Xie Clan. Xie Xiufan, the eldest son, is the only one he respects and fears despite their differences. But when the clan head's new wife schemes to take over the house and harm their loved ones, the two set out to gain power and get revenge on her. As they strive to do so, they find themselves on the Heretical Path, away from orthodox martial arts. Their skills may be called evil and demonic, but Yunye and Xiufan will bring justice with them!