Zhang Xiaofan, who has been studying in Kunlun for ten years, went down to take revenge. With his peerless medical skills and powerful force, he returned to the imperial capital to find out the truth about the frame-up by three major families ten years ago. He rescued the old man of the Xu family, announced his return in public, challenged the masters of the three major families, and gradually uncovered the conspiracy of the Qian and Wang families to collude with the Japanese Sasaki family and plot treason. Zhang Xiaofan single-handedly swept away his enemies, protected his homeland and loved ones, and finally succeeded in building the foundation and starting an urban legend.