Rael was an elite student at Leiber High School， but because he came from a single-parent family， his mother fell ill and needed medical treatment， so he had to drop out of school and work to earn money. Once， he was maliciously forced by gangsters to sign a huge compensation agreement， which left him without an income and caused his mother to lose her life. Before her death， his mother told Rael about her father's identity: he was a wealthy gangster boss， but he would not recognize her and her son. Rael did not understand why his father was so cruel， so he began his road of revenge with resentment and anger.