In a parallel reality where the government oversees Japan's railways, Naoto Takayama dreams of a stable life as a Japan National Railways employee. To achieve this, he enrolls in the rigorous training program where mastering train knowledge and facing unexpected challenges are key. Alongside fellow students like the athletic Aoi Sakura, the always hungry Sho Iwaizumi, and the walking encyclopedia Haruka Komi, Naoto navigates through their training, tackling thieves, bomb scares, and the radical 'RJ' faction pushing for railway privatization.