Seon Woo helps out Jang Il and his father Yong Bae, who are going through rough times because of loan sharks. Feeling grateful, Jang Il offers to help Seon Woo with his studies and they become close friends. But to help cover up Chairman Jin’s crime, Yong Bae makes it look like Seon Woo’s father committed suicide and knowing about all this, Jang Il tries to kill Seon Woo to prevent him from filing a petition and they become enemies. Having barely survived, Seon Woo loses his sight from the shock of the incident and pretends to have lost his memory in order to find the truth. With the help of Tae Ju, who pretends to be his father, Seon Woo is rescued from despair and reappears in front of Jang Il now as a successful businessman. Still receiving threats from Chairman Jin, Jang Il is flustered by Seon Woo’s reappearance and now Seon Woo’s revenge begins.