Overview:

Cosmic Era 71. A year into the war between the Zodiac Alliance of Freedom Treaty and the Earth Alliance, a team of elite ZAFT soldiers attack the neutral Orb Union's resource satellite Heliopolis, attempting to seize the Alliance's new G-Project mobile suits. Kira Yamato, a high school student who gets involved in the incident, coincidentally encounters his old friend Athrun Zala, and finds that his fellow Coordinators are now his enemies.