In a time of war two countries fight for their own ideals using any means necessary. Susumu Tokimune is a new recruit who in his first battle encounters an engineer with a new machine called Argevollen, which will hopefully bring peace.

in a time of war to countries fight for their own ideals using any means necessary. now there is a new machine to conquer the battlefield called "Trailkrieger" Susumu Tokimune is a new recruit that on his first battle loses his Trailkrieger, but his luck hasn't run out yet. he encounters an engineer with a new Trailkrieger called Argevollen which change the course of war.