Su Wan, an ordinary and tenacious "Cinderella", signed a one-year hidden marriage contract with Gu Yan, a self-proclaimed freelance painter, in order to raise money for her mother's expensive surgery. After her marriage, she discovered that Gu Yan was actually the heir to a top conglomerate, and her mother-in-law, Lin Fengyi, the head of the group, regarded her as a "stain" for clinging to the powerful. She teamed up with Gu Yan's childhood sweetheart and jealous best friend Lin Wei to set up numerous tests and frame-ups, with the intention of making her leave voluntarily. Su Wan relied on her kindness, professional ability (interior design) and attitude of neither being humble nor overbearing to resolve crises time and time again, and quietly blossomed in the workplace. From the initial contract game and secret observation, Gu Yan was gradually attracted by Su Wan's truthfulness and tenacity, secretly escorted her and fell deeply in love. When Su Wan discovered that there was a hidden secret behind her mother's death, involving past grudges with her mother-in-law, she decided to take the initiative to explore it. The story progresses through the battle of wits between mother-in-law and daughter-in-law, the emotional tug-of-war between husband and wife, and the uncovering of the truth about old events. In the end, Su Wan not only wins love and respect, but also achieves a counterattack of self-worth.
