Modern accounting talent Lin Wan transmigrated into a book overnight, becoming Shen Qingyao, the vicious legitimate daughter in the capital whom everyone reviles—her engagement is about to be annulled, curses plague her, and she is fated not to live past twenty. Refusing to yield to fate, she sorts out the entire estate's accounts with a single ledger, startles the literary world with a poem about plum blossoms, and revitalizes commercial routes with a single hand of arithmetic, calculating her way from the quagmire of inner courtyard struggles all the way to the business circles and imperial court of the two capitals. Cold-faced young master Gu Yanchen goes from guarded testing to standing shoulder to shoulder in harmony; ten years of prejudice lose to a sincere heart. Watch as the wicked woman is cleared of wrongdoing and her grievances are redressed, a peerless couple calculates human hearts, defies the heavens to change their fate, and grows old together in the same boat.