Chen Mo, a wasted martial arts student, was abandoned by his family. He accidentally received the inheritance from the former martial arts saint Yun Canghai. After washing the marrow and changing tendons, he became a master of martial arts. He originally wanted to live in seclusion, but when he saw the Japanese pirates raging and the rivers and lakes in turmoil, he stepped forward resolutely. From guarding fishing villages to beheading Japanese chiefs, from rivers and lakes disputes to secret fights in the court, he repeatedly broke through the "black evil" conspiracy and helped Qi Jiguang pacify the southeast. On the day of his success, he was granted the title of Marquis and sealed, and drifted away with his confidants, leaving only a legend of the chivalrous man in the sea.