The TV series "Moonlight Blade" is adapted from Gu Long's martial arts novel of the same name. 24 years ago, the leader of the martial arts world, Yang Changfeng (played by Sui Shuyang), was mysteriously killed, which became a major unsolved case in the martial arts world. 24 years later, Fu Hongxue (played by Zhong Hanliang), who is known as the only orphan of Yang Changfeng, suddenly rises up in the world of martial arts to take revenge. Ye Kai (played by Chen Chuhe), the illegitimate son of Yang Changfeng, who has exchanged identities with Fu Hongxue since childhood, schemes to get Zhou Ting (played by Zhang Meng) to win Fu Hongxue's affection, but unexpectedly Zhou Ting really falls in love with Fu Hongxue. In order to help her sweetheart Yan Nanfei (played by Zong Fengyan) seize the position of the leader of the martial arts world, Ming Yuexin (played by Zhang Dinghan), one of the four envoys of "Cloud Sky Summit", tries to get rid of Fu Hongxue but gradually develops feelings for him. Fu Hongxue encounters various crises and tribulations on the road of revenge, and endures many tests of good and evil, love and hate, loyalty and betrayal. With the help of Ye Kai, Zhou Ting, Ming Yuexin and others, he exposes and smashes the numerous conspiracies of Yan Nanfei, Xiang Yingtian, Gongzi Yu, Madam Yang and others, uncovers the mystery of Yang Changfeng's murder and his own life experience, awakens the love hidden in his heart, and the martial arts world of swords and shadows returns to peace...