Guess who's coming back to Euncheon High School? That's right, Kim Jong In, aka Kai. After spending two years in America, he's finally taking back his title as "king," but it's not going to be easy with Heo Naeun around.

"You wanna hear a funny joke?"

"No."

"(too late) You getting laid."

 
Heo Gayoon; "I may not be happy with myself, but for hell I'm sure that I'm better than you."
Kim Kai; "Go ahead and say you can do better than me, but many people think another way."