Retired boxer Soo-Young discovers he has to pay off his father's debt when Tae-Seung hunts him down. Fascinated by Soo-young's persistence, Tae-Seung offers him an alternative - to learn the ropes and start from the rock bottom. Will this dangerous relationship work, or will this be another living hell for Soo-Young?

(Source: Lezhin)

Note: Chapter count includes 26 side stories.