The Ban family faces a financial crisis. To save her family, twenty-one-year-old Ban Ban marries business tycoon Wen Ting'an, who is twelve years older than her, in place of her sister. This arranged marriage, which began as an exchange of interests, initially kept the two distant and reserved toward each other—she was innocent and gentle, while he was described by the outside world as a flamboyant and unruly prodigal son. After moving in together under the same roof, their daily life slowly broke down the barriers, but the appearance of his first love Lin Sang and the trouble stirred up by her best friend came one after another. Ban Ban constantly grew within the marriage, learning to sort out heartbeats from reality, and amidst conflicts and tug-of-war, the two slowly moved from contractual spouses to treating each other with true sincerity.