Synopsis
In October 1941, as World War II threatens to tear the civilized world apart, an unexpected complication emerges: an alien invasion. Despite the sudden arrival of these extraterrestrial attackers, the Axis and Allied powers continue their devastating war. Only the Kishin Corps and their massive Geo-Armor Robots (known as Kishin), built from a captured alien robot soldier, stand between Earth and complete destruction. A teenager named Taishi suddenly becomes the focal point of a conflict over a mysterious black attaché case given to him by his father, Professor Tokamura. The case holds the control mechanism for one of the giant Geo-Armor Robots, and the Japanese Kanto Army, the alien invaders, and the Kishin Corps all seek to retrieve the device. Amid spies, armies, aliens, and giant robots, Taishi faces an epic adventure—if he can survive it.