Twenty years after the Hae clan, a family of masters of the world's greatest martial arts, the Unsasim method, was wiped out, Mak Gwan, the head of Dongbi Academy, a school dedicated to documenting and reporting on martial arts, disappeared after receiving an invitation. Mak Mun-gun heads to the Yongmun Inn on Sachwi Mountain, as specified in the invitation, to find his master.

During the Northern Song Dynasty, Gongsun Ce went to Ganzhou to meet with the teacher Zhou Boyan, but encountered the Shen Fu bloodshed. Gongsun Ce encountered difficulties in finding out the truth, especially from the blockages of Master and Daughter. With the help of Bai Yutang, Gongsun Ce finally unearthed the truth about the dart boat injustice and the Shenfu tragedy.