Kim Won Hyung is Lord Kim Jin's son and Crown Prince Y Hon's best friend, however his coup d'état was uncovered and he was beheaded by the Crown Prince on his sister's and prince's wedding day. In present day, he escaped from his punishment as an evil spirit to get revenge upon Crown Prince Yi-hon and Weol-ju.
After defeating his father, he takes possession of his body to get closer to Weo-ju and Gwi to serve his plan of revenge.
