YOU (Kwon Ae Young) 

Age 21, junior year in Seoul University. studying psychology. Bi-ual, bestfriend with Jae Beom.

BAP

6 handsome and rich kingkas from Whimoon High School, age 18, senior year. 

PARK JAE BEOM

Age 21, junior year in Seoul Univesity, studying psychology. Gay, bestfriend with Ae Young.

Going back to high school again, was never what you'd expected nor intended. Now with the determination to finish the research as fast as possible, you re-enters high school with your bestfriend Jae Beom, into the private Whimoon High School, where the rich and the poor are clearly differentiated.