Tang Lian, a genius of the Tang Sect, traveled through Nanjing in 1937, frightened the Japanese army with his martial arts skills in the youth song line, and even rebuilt the Tang Sect in the midst of war. He met the famous general Zhou Weiguo and fought against foreign enemies together. He also met Zhao Yumo, who looked exactly like his old friend, on the banks of the Qinhuai River. Swords danced in the sky, pipa played in harmony, iron, blood and tenderness intertwined, composing a heroic song and romantic legend of a chivalrous man in troubled times.