On her wedding day, Sarah learns that a clinic mix-up has left her pregnant with a stranger's child, then catches her fiancé cheating. She calls off the wedding and raises her daughter Coco alone. Three years later, billionaire Noah Davis discovers Coco is his daughter and demands custody. Refusing to choose between them, Coco talks them into a marriage of convenience. The cold-hearted tycoon gradually becomes a devoted dad, while Sarah returns to jewelry design to confront her ex and workplace rivals. When their fake marriage sparks real feelings, can they overcome their misunderstandings and give Coco a real family?
