Wen Ruan is sent on a flowery sedan chair by her stepmother to marry the sickly young master of the Pei family, whom everyone says cannot survive the bitter winter. During the wedding ceremony, he coughs blood and collapses, but on the wedding night, when she takes his pulse, she discovers he is robust and healthy with a long, prosperous life ahead. The two strike an alliance: outwardly continuing to pretend he is sick, while secretly teaming up to check the accounts. She discovers her mother's dowry was maliciously undervalued and the medicine accounts harbor hidden tricks. While protecting her mother's property, she investigates the other party's scheme. The Pei family forces her to sign a letter of separation, but she calmly hands over a bowl of medicine, and he picks up a brush to write down three years of medicine accounts. As clues to the past events quietly emerge, the entire household waits for the fallen man to finally stand up.