This novel tells the story of Li Xiangyi, leader of the Sigu Sect, who became the greatest swordsman in the world with his Xiangyi Sword and a shining light of the righteous martial world ten years ago. But after he agreed to a duel in the Eastern Sea with Di Feisheng, leader of the Golden Couple Alliance, the two masters vanished beneath the vast blue waves. Both the Sigu Sect and the Golden Couple Alliance suffered devastating losses and gradually disappeared from the martial world. Ten years later, Li Lianhua, a country doctor, travels the world with a Lotus Tower in tow and accidentally earns a reputation as a great physician. Though he never wanted to get involved in the martial world, he is swept into it all the same. Fang Duobing, a passionate young master who dreams of upholding justice and bringing peace to the world, senses that Li Lianhua is not what he seems. He vows to uncover evidence that Li Lianhua is posing as a renowned physician. Meanwhile, Di Feisheng, who has always regarded Li Xiangyi as his greatest rival, recognizes that the unremarkable traveling doctor Li Lianhua is none other than Li Xiangyi after returning to the martial world. How could he possibly let him go so easily? After a series of cases, the three form a deep friendship while solving mysteries amid laughter and banter. Li Lianhua and Di Feisheng, who had both lost interest in the affairs of the martial world, are stirred once more by the young Fang Duobing, who takes the safety of the world as his own responsibility. Together, the three fight side by side and solve bizarre cases in the martial world in the story that follows.