Characters Description:  P.O - First year student he's noona is suzy. Ukwon & B-bomb - Second year students , Bestfriends & Dancers since elementary. Zico & Kyung - College students & rappers. Jaehyo- Junior student , he trained Ukwon & B-bomb. Suzy- & IU - First year students , besfriends & both inlove with P.O Minzy- Second year students , dancing with Ukwon & Bbomb.