On the day of the graduation ceremony, Lin Xi witnessed the betrayal of her boyfriend Gu Yu and Bai Yueguang. When she was heartbroken, she accepted the marriage contract from her boyfriend's father, billionaire Gu Chengye. "Marry me, and everything in the Gu family, including the right to retaliate against him, will be yours." With a marriage contract, she changed from her ex-girlfriend to the "little mother" he couldn't reach. In the whirlpool of the top wealthy families, she thrives and shines. When her ex knelt down and begged to get back together, she held his father's arm and smiled like a flower: "Call me mom." And this marriage that started as a transaction has quietly come true at some point.