With the Japanese Imperium at war with the Soviet Union, and the United States watching cautiously on the sidelines, Second Lieutenant Joe Sullivan of the U.S. Marines is sent on a dangerous mission to Tokyo. The Russians have Summoned a demon of epic proportions to attack the city, and all that stands in its deadly path is an untested Japanese super-robot. Now, Joe is at the controls, his gravity-spiking Power at the ready. But that is one huge, mean Demon....