Li Shuang, a female general of Taijin, takes in an amnesiac man she finds by chance, and names him Jin An. Jin An accompanies Li Shuang wholeheartedly, and the two secretly fall in love.
However, when Jin An remembers that he is actually the prince of an enemy state, the two devoted lovers have no choice but to take up arms against each other. Jin An also has another identity where he is a supernatural warrior named Xuan Yi Ke, who remembers Li Shuang, loves her unconditionally, and swears to protect her no matter what. Jaded by war, they decide to join forces to resolve the crisis and uphold justice.
