Kim Go-Eun, she has been your close friend since childhood, you have been together since kindergarten and now you are attending the same high school. She's always spend her time with her bestfriend, Ye-Jin.-

Today, the class is very noisy, today the teacher is not come to the class because there is a sudden meeting, you sitting at your desk with Minho, he is your friend and also Ye-Jin's boyfriend.-