The story follows Grace, who was kidnapped as a child and later found and returned to the Morgan family. As the heir to the Morgan family, she faces jealousy and provocation from her younger sister, Luna. While working at a royal charity organization, Grace is constantly tormented by Director Boris, but she uses her intelligence and effort to complete her tasks and expose Boris’s misdeeds. At the same time, she meets Prince Robert, who hides his true identity, and they develop feelings for each other. However, Grace’s identity and her romance with Robert draw the jealousy and scheming of Luna and others, putting her in a difficult position. But with resilience and courage, Grace overcomes all crises, ultimately achieving success in both her career and love life.