The year is 1994. Divisions of Soviet battleships have split the United States in two, conquering the American heartland west of the Mississippi and east of the Rocky Mountains within two weeks. In the occupied territory, a handful of rebels still resists the invaders, but they are slowly being wiped out. Only a miracle can save the embattled Americans, a miracle named Tiger-X. The most sophisticated American battlesuit ever designed, Tiger-X has the destructive capability of an army. With it, the rebels will be able to mount a counteroffensive against the invaders.