Mignon is a young, up-and-rising cage fighter. He has been boxing for two and a half years. His coach is strict and controls a lot of his career. After each violent match, Mignon suffers severe injuries and needs medical treatment. The doctor tries convincing him to quit fighting. However, Mignon believes he has no other prospects for his future.

After losing his parents at a young age, Mignon lives as a mechanic by day,
and a cage fighter by night at an illegal arena.
 
Living a life of exploitation and violence,
the only person who gives him any attention is Oh Young-One, a doctor at the illegal arena.
 
“I’ll do anything…! I… I can help you!”
 
Despite knowing Young-One’s true identity,
Mignon’s pure and blind love for him causes Young-One to start slowly opening his heart.
But the hellish reality that surrounds Mignon starts to shake up even Young-One’s life!