Cosmic Era (C.E.) 73. About a year has passed since an armistice signed between the Zodiac Alliance of Freedom Treaty and the Earth Alliance brought an end to the First Alliance-PLANT War. However, the hostilities between Coordinators and Naturals remain, including those of Shinn Asuka, a Coordinator who joined ZAFT after seeing his parents and sister killed right in front of him during the Alliance's invasion of Orb. Entrusted with one of ZAFT's brand-new mobile suits, the Impulse, Shinn and his allies must fight through an ever-escalating conflict, kicked off when an elite EA unit hijacks 3 of ZAFT's other new units, the Chaos, Gaia, and Abyss. With tensions high and unseen hands working from the shadows, a second Bloody Valentine war is on the horizon.