The Great Xia Dynasty was established for three hundred years, martial arts flourished, and imperial power declined. The aristocratic family, headed by the "Five Surnames and Seven Hopes", controlled the government, land and arsenal, and regarded the imperial power as a puppet. The empress Xiao Qingyuan came to court, unable to stand alone, and was ignored by aristocratic families and powerful officials. Lin Chen, the Marquis of the Grand Xia Dynasty, was plotted. In order to investigate the truth, he pretended to be an idiot and helped the empress Xiao Qingyuan to kill traitors, stabilize the court, regulate borders, and rule the world together.