50 years after a nuclear war, the two superpowers handle territorial disputes in a different way. Each fields a giant robot to fight one-on-one battles in official matches, each piloted by a man inside, known as robot jockeys or jox. The contest for possession of Alaska will be fought by two of the best. The conscientious Achilles fights for the Americans. Opposing him is a Russian, Alexander.

In the year 2041, the rebel Centros are a plague to the survivors of the great toxic gas scare of 1993. A renegade Megarobot pilot and an archaeologist must team up (despite personal differences, a reluctant romance, and official pressure to cease and desist) to thwart the Centro's attempts to resurrect a hidden Megarobot, with which they can challenge the prevailing order.

Unicom is a powerful organization overseeing most of the world after its economic collapse. They have banned computers and robots in an attempt to insure "life, liberty, and the pursuit of economic stability". When a Unicom Synth robot infiltrates a southwest TV station and kills the manager, a revolutionary against the gestapo-like corporation, a lowly Unicom delivery man must help the rest of the station survive through the incoming "thermal storm".

The year is 2036 and Earth has been invaded: hope lies with the last Robo Warrior - a towering fighting machine.