Song Zhao, the legitimate daughter of the Grand Tutor's household, has been extraordinary since childhood. She possesses tremendous strength, an enormous appetite, and a passion for martial arts and military strategy. After marrying Gu Huaiyuan, the young heir of the Marquis's household, she refuses to compete for power within the inner household. Instead, her military insight and strategic brilliance lead her to become a close confidante of Xiao Chuxian, a prince stationed at the border. When Xiao Chuxian dies in battle in the southern frontier, Song Zhao volunteers to defend the borderlands. For thirty years, she protects the territory, builds fortresses, establishes border markets, and pacifies the southern tribes, never marrying again. In her twilight years, she returns to the capital. Before dying of illness, she dreams of Xiao Chuxian coming to take her home. The two are buried together on Mount Cangwu, leaving behind an epic tale woven from devotion to their country and enduring love.