 In the 21st century, Earth is invaded and quickly subdued by a alien race called the Inbit. The terran population stationed on Mars try to liberate the planet, but are fought off. Years later, a second terran attack is attempted with a force armed with new weapons vastly superior to the enemy, but again Inbit defences prove to be too strong. One of the few survivors to reach Earth is Stick Bernard, a young mecha fighter pilot who witnessed the death of his fiance in the battle. Separated and alone, the aggrieved pilot sets out to attempt to complete his mission, to find Reflex Point, the suspected Inbit headquarters, and do what he can to destroy it. Along the way, he meets up others who eventually join to form a small band of guerilla fighters who must find their way to Reflex Point and stop the Inbit.