Lv Guichen, the son of the Qing Yang clan in the northern part of the country, comes to the eastern part of the country as a hostage and befriends Ji Ye, the son of a concubine who has never been loved by his father, and Yu Ran, the princess of the Yu clan who has followed his grandfather to take refuge. The three young friends are targeted and challenged in the Prince's Academy because of their identities, and in the process of helping and saving each other, a deep friendship is established. The kingdom's overlord, Win Wu-Young, is ordered by the lords with the son of heaven, and Lv Gui-Chen, Ji Ye and Yu Ran follow the famous general of the generation, Xie Yan, to send out a righteous division to fight the battle of Zhangyang Pass. In the moment of danger, the teenagers fight to the death and grow into a generation of leaders.