Bambam is one of the best hitmen in Korea. There was no target that he couldn't get, no matter how difficult the case was. But now the two largest gangs in Korea are at war with each other - and Bambam's at the front of it. There's just one problem: Mark Tuan isn't just another target. Mark is a person with a personality and a back story, someone that Bambam has looked up to since he was a child. There are no two ways about it. Either Bambam kills Mark, or Mark kills Bambam. But what will happen when old feelings start to resurface?