After the war that divided Earth and its colonies ends, Heero, Duo, Trowa, and Quatre part ways with their Gundams, sending them off into the sun. Relena Darlian now holds a position in the Earth Sphere Unified Nation. Just as peace settles in, Relena is abducted, heralding the arrival of a new adversary in the form of Marimeia Khushrenada, daughter of the late dictator Treize Khushrenada and heiress to the Barton Foundation. Adding to the complexity, Wufei, the pilot of Gundam Nataku, aligns with this new threat. The Gundam pilots must retrieve their mobile suits and prepare for battle once more to thwart Marimeia's ambitions of seizing global power.