In the chaotic world of the Northern and Southern Dynasties, rumors spread throughout the martial world that the Sword-Washing Manual concealed secrets to saving the nation and attaining the ultimate heights of martial arts. Shen Qinghan, an orphan from the frontier, is drawn into the conflict by his family's heirloom jade pendant. He joins forces with Su Ningshuang, an heir to the Medicine King Valley, to search for the manual, only to discover that it contains no peerless martial arts, but instead points to a treasure meant to aid the poor. Mo Wushang, the orphaned heir of the previous dynasty, establishes the Netherworld Pavilion to avenge his family. He and Shen Qinghan go from enemies to understanding one another, and ultimately, Mo sacrifices himself to settle their feud. With a benevolent heart, Shen Qinghan puts an end to violence. Together with Su Ningshuang, he uses the treasure to help the people and earns a legendary reputation as a benevolent hero.
