Chen Mo, a martial arts failure, is abandoned by his family. By chance, he obtains the legacy of Yun Canghai, a martial arts sage from a former dynasty. After having his marrow cleansed and sinews transformed, he masters martial arts. He originally intends to live in seclusion, but seeing Japanese pirates run rampant and turmoil sweep the martial world, he resolutely steps forward. From protecting a fishing village to slaying a Japanese chieftain in battle, from conflicts in the martial world to secret struggles at court, he repeatedly foils the Black Fiend’s schemes and helps Qi Jiguang pacify the southeast. When his work is done, he is granted a noble title and lays down his seal of office. Then he leaves with his soulmate, drifting away and leaving behind only a hero’s legend amid the vast ocean.