To get advice from a loan shark, Dongwoo, We go to the iron material called the legend of a loan shark. As you deal with him, you hear the story of Cheoljae's past. A woman named Do-hee who has to pay back her parents' debts... It was a woman who had a relationship with Dongwoo in the past. Cheoljae uses numbers to keep her from leaving. Dongwoo plans to revenge on Cheoljae...