Modern top secret agent Yan Ruyu unexpectedly time-travels, forced into a arranged marriage with Prince Zhennan, Huo Changhe. On their grand wedding day, the prince's estate is suddenly raided, and the entire clan is exiled to the northwest. Endowed with a portable dimension space, she empties out the prince's estate and her maternal family's wealth in advance, protecting her mother-in-law and young brother-in-law all the way. During the exile journey, the scheming cousin Ruan Xianzao plots against her repeatedly, the cowardly second young master listens to slander and targets her everywhere, and the escort officer Yan Song also constantly makes things difficult. In order to investigate the false accusation of treason, Huo Changhe disguises himself and follows secretly, silently guarding Yan Ruyu. Along the path, mountain bandits and fake Taoist priests set up traps one after another, with layers of conspiracies constantly emerging, while Yan resolves crises using her peerless medical and toxic skills and spatial supplies.