Xiumin has a little sister, Hajae. Living with them is Sung Hyojin, who is a very close friend of both, and next door is Kim Jongin, Kai. One day, Xiumin and Kai head to Seoul, and unlike usual, they don't return.
Over a year passes before they finally return. It turns out that the two joined a Korean band called Exo, which actually leads to not only love, but possibly the loss of a friend.
"You left me for more than a year, then you brought us here, and look where we are. It's YOUR fault."
Suzy is happy with her boyfriend which is one of the EXO members.Then suddenly her boyfriend got into an accident and lost his memories and fell in love at another girl.What happens next as his memories come back?