In 1941 the Nazis have joined forces with ruthless alien invaders in a bid to conquer the world, and only the valiant actions of a small band of heroes and their armoured giants stand between humanity and the brink of oblivion! From the Manchurian Railroad to the heart of Europe, the international organization known as the Kishin Corps counters the attacks of the Japanese Army and the plots of German spies. This all leads to the final confrontation between the behemoth Panzer Knight and the four Kishen robots!