Jisun expects her summer break will be enjoyable if she quickly finish all her assignments and homework. Together with her brother, Jungmin and his best friend, Hyunjoong, and also her classmates Hyungjun and Kyujong, they're going to plan an epic holiday. But she didn't expect that she'll meet a ghost boy.. Who asks for their help.  Will she ignore the ghost boy's plea and continue to rapidly finish her homeworks?

“You sure you want to leave?” “I’ve thought of it, Yoo Ra. It’s for my future. I won’t becoming anything if I stay at this place. I promise, our friendship will still be the same, be it I stay away from you. Because you’re a special friend of mine, and also the other two fellows.” “You promise? “ “I’ll hold onto that promise, don’t worry”