Li Chengye, a young general of the Beifu Army, was captured in a tragic defeat and unexpectedly learned the truth about his life experience - he was actually the last bloodline of the Canglang royal family. After being released and returning home, he found that he and the entire Beifu Army fell into the suspicion of the emperor, the criticism of the courtiers, and the isolation of his compatriots. He must lead this lonely army to fight a way out for himself and his subordinates amid the identity torture of "who am I" and the loyal decision of "who do I protect?"
