The man who runs the bookstore finds a note that says ‘Secret Diary’ on his bookshelf.
The Diary is written by Hyun, a high school student who has a crush on his childhood friend, Dong-ho. He wrote about his feelings for Dong-ho in the diary. The man finds himself immersed in the diary visualizing the two of them in the past.
As the man turns the page, a folded note falls out of the book. The man begins to read the last diary written in the note.

Directed by Winter Jung (South Korea)