Sejong Gangnam University is an all-boys private school, located in the capital of South Korea. It is also the place which is a real nightmare to Jung Jaehyun - a boy who is a real magnet for problems. Because of his long register of offenses not only in school, he ends up in the boarding school with strict rules and even stricter fraternities presidents, especially the one of his fraternity - Lee Taeyong, who is always on his neck and checking on him. What will happen when the two totaly different personalities and problems collide?

7 boys are Mafias in a young age,got together through their parents who wanted them to be close and defeat the Threat to the Mafia World,it's up to them to find out their enemy,kill and destroy them the ships will be revealed in the chapters