One day, Kōji Sugimoto, a young man who works as a mechanic at a car maintenance shop, inadvertently gets into the "Slave Trooper MADOX-01," a new anti-tank land weapon that was being transported in secret. He is unable to get out of the MADOX-01 due to a software bug. He can't figure out how to use the suit, and is subsequently chased by the military. Kōji, still stuck in the suit, heads for the building where he is to meet his girlfriend Shiori Nagura, but Lieutenant Kilgore,