Shen Qingyan, the orphan of a general in the Northern Song Dynasty, took the name of the mute servant "Ayan" to avoid the disaster of annihilation, and hid in the Lin family in the south of the Yangtze River. He was forced to marry a lame girl Lin Wanqing, and was ridiculed. Four years later, his enemy Li Song went south to pursue the secret map of the border and framed the Lin family. In the dark night, Shen Qingyan tore off his stupid disguise and teamed up with his wife Lin Wanqing to steal pictures, deliver letters and gather old friends in desperate situations. On the execution ground, he revealed his identity in public, brought down the traitor, and avenged his injustice. In the end, he returned home with great honor as a martial arts champion, married his beloved, his former crazy son-in-law in a cold kiln, and finally became a hero who protects the country.
