At last, Hiroto arrives at the distant Gate 42 that the professor told him about before his journey began. The person he meets there offers him a way to stop the station's functions if he wishes—but would that really be for the best…??

Hiroto has finally found Keiha Nijo, the leader of the Dodger Alliance, able to evade the station's automatic turnstiles by falsifying her location data. Will her story finally shed some light on the history of Yokohama Station's propagation?

All Hiroto has ever known is a life on a tiny coastal speck of Japan. Much of the country has been swallowed by Yokohama Station, a mysterious, ever-growing series of buildings that's been around for as long as anyone can remember. The few who live outside its many entrances have never seen Inside and know only rumors and legends of the station's interior. That all changes when Hiroto is given an 18 Ticket, a mysterious item that lets him enter the massive complex for five days. The young man has always sought a purpose, but the one he finds may not be the sort he'd hoped for...

In a future where Yokohama Station covers most of the island of Honshu, there are two ways of life-inside the station and outside. Life within the station is strictly controlled, and those who fail to follow the rules are expelled to the harsher world outside. When one of these exiles receives a temporary ticket to go into the station, he's also given a mission to find the leader of a group determined to free humanity.

This follow-up volume to the science fiction hit sheds light on the history of Yokohama Station and people all across Japan through a series of short stories. "Kyoto" tells the tale of a struggle against the information warfare of the station monitoring systems. "Gunma" details the collapse and reconstruction of Yokahama Station. In "Kumamoto," people tolerate violence and mistreatment in exchange for safety from the looming threat of the station. Finally, "Iwate" follows a spy's escape to an unknown region of the north.