 The sinister Great Spirit and his second-in-command, Zoltar - rulers of the planet Spectra - have developed plans to conquer the Earth & enslave its people and resources. The only thing standing between them and their goal of Spectran galactic domination is G-Force - a group of 5 orphans enlisted in defence of the Intergalactic Federation. Under the supervision of Security Chief Anderson & robot coordinator 7-Zark-7, G-Force finds itself in confrontation after confrontation, most involving massive Spectran war machines built in the design of animals or birds, and equipped with lethal weaponry.