In the distant future, specifically in After Colony 195, Earth is encompassed by orbiting space colonies. The colonists are subjected to harsh mistreatment at the hands of the Earth Alliance, using massive humanoid machines known as "mobile suits" to gain control over them. The perpetrator of this oppression is a clandestine organization referred to as "Oz," which has infiltrated the Alliance's military and lead it down the path of repression. The day has come for the space colonies to launch a counterattack. Five young pilots are entrusted with high-tech mobile suits dubbed "Gundams," and are dispatched to Earth with the intention of conducting guerilla warfare against Oz and the Alliance puppets under their command. The battle to determine the fate of humanity has begun...