Immortal cultivator Song Mingyuan dies during a heavenly tribulation and transmigrates into a book, taking the place of the original Song Mingyuan to marry the young Defender of the State General Lu Peifeng, whose family is about to have their assets seized and be sent into exile. She strikes a deal with Lu Peifeng to rescue the original maid Xing'er and protect the Lu family, young and old, so they can safely reach the place of exile. On her wedding night, she displays her supernatural abilities, ransacking corrupt officials' and the emperor's private treasuries. Wrongfully sentenced to exile, the Lu family faces danger at every turn, plagued by opportunistic relatives, difficult prison guards, and relentless assassins. Relying on her skills, Song Mingyuan protects Old Madam Lu and everyone in the Lu family, neutralizing venomous plots and pursuits. Along the way, she meets the demoted official Shen Jian, and together they struggle to survive on the precarious exile road, resisting the court's conspiracies and persecution.