Yunho, Jaejoong, Donghae, Hee, Eunha and Siwon are high school friends. Yunho is the student council president while Jaejoong is a rabble rouser with ample help from Hee. Jaejoong takes a prank too far and is expelled for bringing weed and alcohol to school.  Fast forward to 27 years later and it's Yunho's son Jinki who is the bad boy of school and walks the line of expulsion while Jaejoong's daughter Minjung is a model student.   Presenting SHINe