You, a 15 y/o student studying in seoul high, had a bad past. Because of a boy named Mark, you had to join a gang. For someone who hated violence, you managed to earn the title of being one of the school's most skilled fighters along with your fellow gang member and best friend, Chaeyoung. Everything was normal until one day you had a mission with Chaeyoung, Mark and 2 other members that changed your life. You found someone familiar and was certain that it was her. You wanted to get her back but didn't know how to. It won't be easy, especially when the person is from a rival gang.