Best friends Lin Nanqiao and Xia Linshi encounter an accident, both crossing into a wealthy family novel, and marry through an alliance into a pair of twin brothers in the book, turning former best friends into sisters-in-law. In the original work, the two are tit-for-tat cannon fodder female supporting roles, stirring up trouble everywhere and ending up with tragic fates, and the two male leads will also fall in love with the female lead. Knowing the plot direction well, they immediately form an alliance, deciding not to repeat the same mistakes, first stabilizing their relationships with their husbands, avoiding fatal plot crises, quietly accumulating financial power, planning to securely save their lives, and waiting for an opportunity to pull out and leave the wealthy family, but the plot quietly deviates from its original track.