It's the year 195 AC (After Colony) and over the past few years, earth's people have established colonies in space. Since the Earth was in war then, the peaceful colonies seemed like a good alternative for the war-weary people in Earth. Anyway, when the wars ended, an alliance was formed to bring peace through force of arms. The alliance had control of the colonies and had staged a military intervention using machines called mobile suits to crush all opposition. They placed the colonies under martial law and cooperation and communication between the colonies was prohibited. The alliance was actually being controlled by the Romefeller Foundation, the industrial combine that makes mobile suits. Well, after years of oppression, rebels decided to strike back at the alliance. They developed Gundams, advanced mobile suits and found five people to pilot them.