Lim Sorin loves to read and write. She writes her own short stories for fun, inspired by the ideas contained in her bookshelf. One day, during her monthly visit to the bookstore, she comes across a book with no title, no publication information, and no text.

"You're interested in that one?" The shop owner asks. "It just came in this morning. It doesn't look like a journal, but it can't be a normal book."

Curious, Sorin purchases the blank book and takes it home. When she opens it again later that night, new words are written on the first page that were not there before:

You are the author of your own story.

So she writes on the following pages. The day after that, strange events begin to occur, and they remind her of what she wrote the night before. Then again, she reads a lot, so she is bound to make connections between literature and the real world. But then they keep happening. Her writings keep coming to life.

Sorin quickly realizes that this mysterious book allows her to rewrite reality.