-Part 2 of Troublemakers- Being in High School is a nightmare. And to try and survive in an Art School filled with rich and spoiled brats isn't better. Especially with a group of guys that targeted you since the first day of school. Jinhwan, Jiwon, Yunhyeong and Donghyuk know it too well already and try to just survive the nightmare called the troublemakers of school - Junhoe, Hanbin and Chanwoo.

-Part 1 of Troublemakers- Jinhwan was perfectly fine with his life before he was transferred to a new school filled with rich brats, he doesn't think he can even make new friends in this school. But this is when Koo Junhoe is getting into his life and he might like him a bit more than he wants to admit. Hanbin never was good at maintaining a relationship, each relationship he had usually ends fast since he 'isn't trying hard enough' and 'he only cares about his music'. So Hanbin is sick of it and decides he's better off without having a relationship, but then a new student from America is catching his interest. Yunhyeong has been an actor since he was a child. He remembers how nervous he was on his first role, but he started to enjoy it once he met another child actor that was on the set. They became good friends and Yunhyeong started to feel he's seeing him more than just a friend, but then Chanwoo disappeared from his life until he meets him again only to see he isn't the guy he used to know.