The storyline isn't great in this one, as many have said. And if you don't like gross, somewhat gory scenes, this isn't for you. That being said, I still had fun watching this and even watched a few parts again after it was over. I loved the main two guys (Ma Dong-Seok and Lee Jun-Young) and, to be fair, I turned it on after it showed up on my feed and I recognized Lee Jun-Young on the pic. They acting from these two was excellent and I understood their dynamic because of it. The young girl and grandma made sense with how they showed them, but the girl's acting was pretty terrible and 1 dimensional in this. I didn't believe much about her because of it. The army girl that shows up later did fine with her acting, but she didn't make sense and they made no effort to make her make sense. Her storyline is very much left out of this. I got the feeling the movie is from a webtoon or book because she just isn't really explained at all.

Acting and story aside though, this movie is basically just an action flick and it does a great job with being that. I loved the fight scenes and really was swept into movie from it. I loved seeing them fight their way through each situation and the acting was great in these moments. So, if you're a fan of action and don't mind some gore and gruesome scenes, then this movie is for you. Enjoy!