In the Great Zhou Dynasty, an alternate historical world, three powers stand in a tense balance:
The Northern Frontier: The heroine’s maternal family, the Xie clan, rules from the Marquis of Northern Defense’s estate and commands 300,000 frontier troops.
The Imperial Court: The imperial Xiao clan, with a young emperor, a regent empress dowager, and powerful ministers holding sway.
The Southern Frontier: The Shen clan, a family of nobles with a different surname from the imperial house, is richer than the nation itself and secretly gathering strength.
The central conflict: In her previous life, the heroine was betrayed by her closest kin and her entire family was executed. Reborn at fifteen, on the day of her coming-of-age ceremony, she uses her knowledge of the future to plan every move. In the end, she seeks not only revenge, but also to change this cruel, predatory world.