Su's design studio was on the verge of bankruptcy and her father was seriously ill in the hospital. When Su Nian was desperate, she signed a three-year contract marriage with Lu Shiyan, the president of Lu Group. One is a cold-faced, ascetic and overbearing CEO with a strong desire for control, and the other is a tough, independent, troubled daughter with a design dream. This transactional marriage based on interests gradually changes in cohabitation. He said he thought she was troublesome, but he silently cleared the way for her; she resisted alienation at first, but gradually fell in love with him because of his "hard words and soft heart". When the contract expires, when family resistance and business war crises ensue, can this marriage that started as a transaction finally turn into a sweetheart? Lu Shiyan said: "Su Nian, from the day of signing, you can only be mine."