Jiyong hasn't seen or heard from Eunmi in over two years, so he doesn't expect a midnight phone call from her to change his entire life.  But it does. 

Bang Yongguk is the epitome of cool, so the last thing he wants to do is spend his senior year of high school hanging out with some dorky middle-schooler. But, if he wants to graduate, that is exactly what he's got to do. 

Risae has given her everything to the person she loves, but sometimes that's just not quite enough.    (Xiumin-centric!)