Kris had a childhood bestfriend in Los Angeles, California (L.A) who he secretly loves. But due to the business problems that is going on to their family, their family needs to move in Seoul, South Korea which is he needs to be apart of his childhood bestfriend who he secretly loves called Krystal Jung. On his Senior Year in Seoul, South Korea ... he became the new kingka of the school that his attending right now called SM Elite High, one of the biggest schools in Seoul, South Korea. It happens that Krystal's father decided to let Krystal live in Korea together with her mom and her older brother. So she needs to stop attending classes in LA and continue schooling in Seoul, South Korea. Since her older brother is used to attend SM Elite High when he's on his Highschool Years back then, because there's no other choice .. so she needs to school there too in SM Elite High.

Since it's been a long time that they haven't seen each other for years ... will they still remember each other ?? Is Kris still in love with Krystal that's why he can't do good in his past relationships because he's still deeply in love with his childhood bestfriend ???