Inukugi wo ute! (Hit the Railroad Spike!)

In a world where railroads are the vast continent’s only long-distance transportation, rails are a precious resource, and rampant black marketing of stolen rails necessitates frequent maintenance. When Kenity, who manages the cars for laying and maintaining the rails, is suspected of wrongdoing, investigator Elliot of the railroad supervisors board goes undercover as an outlaw worker. This is a fierce action drama about railroads and the men involved.