At the end of the Ming Dynasty, the martial arts was turbulent. Master Mu’s family retreats to practice. On the night of his departure, his son Mu Zhengtian’s wife gave birth to a baby boy. Master Mu was excited.

The film "The Master of the Supine Armor" tells the strange case of Wushan Town caused by the four major evils. Jiang Yingluo, the head constable of the patrol division, and Du Fengbo, the heir of the Supine Armor Sect, are involved in this case and conspiracy that has been hidden for decades.