The Earth became too small, resources were vanishing and it was time to seek new places to prosper. Therefore many emigrants left the blue planet to start a new life in the space colonies.

The year is After Colony 195, the United Earth Sphere Alliance develops its military power in order to expand its harsh rule over colonies.

To counter Alliances imperialism, a group of rebels launch Operation Meteor: they send to Earth five secret Mobile Suit. Aboard them, five very gifted young pilots are ready to sacrifice their very lives in order to free the citizens of the colonies