Vincent, the Ninth Prince of the South Empire, appears to be a reckless playboy but secretly trains in silence to avenge his mother. At the tournament, he rises to fame, defeats the Kurgan Empire, and exposes the Imperial Noble Consort’s plot to poison princes and seize the throne. In the end, Vincent avenges his mother, is granted the title of Co-King, and marries his fiancée Yara, becoming a legend.