Kikuchi Naoe is a struggling manga artist in need of work. She gets lucky when she runs into a travel writer and is asked to tag along. He turns out to be Yokomi Hirohiko, Japan's biggest train enthusiast. In 1995, he visited all 4636 JR train stations. Now he is going to visit the remaining 5207 private stations. Kikuchi, despite her initial horror at her task, is stuck, as her boss is a huge train geek too. Thus, having few other options, she resigns herself to trying it out and henceforth accompanies Yokomi on his journey around Japan.