Lin Ruoshuang accidentally transmigrates into a book, becoming the legitimate daughter forced into a substitute marriage who suffers harsh treatment from her biological family. Just as Prince Dingnan Xie Ciyuan is framed and his entire family is exiled to the wilderness, she relies on her portable supernatural spatial storage to heal the wounded and hoard supplies along the way, building mutual trust with Xie Ciyuan through hardships. Establishing themselves in the southern wilderness, they promote agriculture and medicine, train troops and fortify cities, resolve multiple conspiracies from the court and princes, pacify refugees to benefit the common people, and carve out a new world of peace and prosperity through practical hard work.