Jung Daehyun, an author living in New York City, searches for inspiration for his new book when he finds a journal buried in the thousands of books in the public library that belings to a photogarpher named Yoo Youngjae. When he ends up struggling with his book, he decides to travel where Youngjae has traveled. Daehyun follows Youngjae into different contries where Daehyun learns more and more