Chen and Lin, one of the richest families, have childhood sweethearts, the only son of the two families. They accidentally went to a brothel and accidentally forced an assassin to death. The emperor who was searching incognito was also rescued by Wuxin. The emperor, who was interested in the two men's martial arts skills, took them back to the capital. Who knows that there are many murderous intentions along the way, and Lin Gongyun of the Lin family has been in trouble and disappeared from the beginning. What will he encounter before returning to the palace, and what will happen in the palace... What will happen to Chen and Lin...