Finn time-travels to become the orphaned heir of the Marquis of Loyalty of the Great Xia Dynasty, and activates a Supreme System. He saves the Shangguan sisters, meets Princess Yaoyao, and gains fame for his archery. After winning first place in the Military Imperial Examination, he is framed by the Crown Prince and the Left Premier. He exposes a treasonous plot, and vows to restore his family's legacy and protect his homeland.