在未来世纪（Future Century，F.C.）由于地球严重被污染，人类移往宇宙殖民星，建立了新中国、新日本、新美国等殖民星国。各国在地球虽然还存有领土，但已受到严重的忽视。 为了避免战争，各国决定以一场高达擂台赛(Gundam Fight，高达武斗)来决定各殖民星国对地球的统治权。比赛每四年一度，以地球为擂台，每个国家（殖民星）派出一位代表参赛，一对一以高达对战，直至只有一名胜利者。胜利者所属国家可擭得各殖民星国及地球管理权四年，直至另一个国家在下一次高达对决获胜。 而活在地球上的居民，便要忍受在各国代表在对战时所造成的破坏。 故事发生在未来世纪六十年开始，当时正开始第十三届高达擂台赛。故事的主角，来自新日本的code error!，为了追寻盗去以DG细胞三大理论，自我增殖、自我再生、自我进化设计出来的code error!(Devil Gundam)的兄长，决定参加这一次的高达对决，故事就此展开。

After Colony (A.C.) 195. Mankind has moved into space. Thousands of people live on giant orbiting space colonies called "Sides." However, the Earth Government, which rules the colonies, is unjust and cruel. A group of revolutionaries builds five robotic weapons called Gundams and plans to send them to Earth to begin their fight for independence. Piloted by five young men, these Gundams carry the hopes and dreams of freedom of the colonists with them as they descend to Earth to begin Operation Meteor!