The heir of a wealthy family, Harrison, voluntarily went to prison to overthrow his usurping elder brother. His fiancée abandoned him and went to live with his elder brother. After being released from prison, he concealed his wealthy identity and entered into a contractual marriage with the orphaned girl, Sophia. Gradually, true feelings developed between them. Sophia discovered that she was the long-lost heir of the family. When her old enemies came after her, Harrison revealed his identity and embarked on a desperate revenge.