Modern ace secret agent Ji Yunshu transmigrates into a book as a cannon-fodder legitimate daughter, binding with a spatial system tied to the life of the sickly and disabled Prince of Zhenbei, Xie Moyao. On her wedding night, she loots the prince's mansion empty, plotting to frame the black-hearted Minister's mansion to be exiled together. On the way to exile, she uses superb medical skills to rescue her eldest sister-in-law, slaughters wolves with bare hands, does business to save money, unlocking spatial supplies on one hand while healing Xie Moyao's severe poison and old injuries on the other. The emperor, the first prince, and stepsister Ji Yunyao covet the Xie family's treasure map from all sides, with conspiracies continuing all the way. Ji Yunshu tears apart scumbag relatives, wicked officials, and bandits. Originally intending to divorce and walk away once the prince was cured, she gradually develops feelings for Xie Moyao, who carries secrets, amidst sharing hardships together.