Caroline studied law at university and worked as an intern at STM Company. She met and fell in love with John (whose identity was concealed), one of the heirs of the STM Group at the company. Caroline's biological parents jumped off the building and died, and the mastermind behind the scenes pointed to John's mother. John's mother opposed the relationship between the two and preferred Elena as her daughter-in-law. Her boyfriend's family may have been the murderers of her parents, which deeply stimulated Caroline. She left without saying goodbye and went into hiding in a foreign country. She returned to her hometown 10 years later to investigate the truth and take revenge. At this time, Caroline had grown into a golden lawyer K and brought back a son who was a math genius. When his son Leo participated in a mathematics competition, he reunited with John, the organizer of the competition. The fate of the two was once again entangled in revenge and love, and the truth about his parents' jumping off the building gradually emerged...