Dajun is bullied every single day at school. Desperate, he believes taking his own life will end his torment but soon realizes it's not him who deserves to die... it's all the scumbags in this world. And when an incident with his bullies forces him to have to fend for himself on the streets, Dajun sets out for revenge. To do so, he'll need to become strong. But he quickly learns that school bullies aren't his greatest enemy... he's now got bigger fish to fry.A high school student, Im Da-Joon is used to being bullied at school. Right before he was about to end his own life, he saw the interview of a friend killer on TV by chance. He got impressed by the interview and decided to seek revenge. His revenge was successful, but his life went in the wrong direction… Im Da-Joon quit school and joined the group of teenagers who ran away from their homes. Da-Joon is now free from school bullies, but now he has to survive against the street gangs who are much tougher than school bullies.