On her wedding day, Jiang Nan believes she is about to begin a happy life. However, her new husband's younger sister, Gu Nian, disrupts the wedding by imposing family rules on Jiang Nan, making her wash her in-laws' feet and then wash her face with the dirty water. Gu Ming blindly takes his sister's side, allowing her to repeatedly scheme against Jiang Nan. After enduring one humiliation after another, Jiang Nan finally refuses to put up with it. She exposes all of Gu Nian's schemes in public, and Gu Nian is convicted and sent to prison. Even when Gu Ming regrets his actions and begs to get back together, Jiang Nan resolutely divorces him, escapes the toxic relationship, and starts a brand-new life.