Princess Chu Qingshu of Dayao and Huangfu Linyuan, King of Beiyuan, once secretly promised to marry. Her sister Chu Qingwan took her place for the marriage and died tragically abroad six years later. Learning Qingwan died with her baby, Qingshu marries into Beiyuan as bait. She topples the powerful Liu clan, stirs tribal conflicts, and leads Dayao’s troops to seize the capital. Huangfu Linyuan kills himself when his kingdom falls. Qingshu discovers the truth from her sister’s final letter. With revenge done, she gives up high status and travels. She rescues war orphan Niannian and lives on, cherishing her memory of her sister.
