Although the Requiem cannon has missed the PLANT capital of Aprilius, it has wreaked vast destruction on the surrounding PLANT. In response, ZAFT sends its lunar orbital fleet to attack Requiem's first relay station, while the Minerva rushes to the Daedalus base to capture the cannon itself.

As the Earth Forces prepare to fire a second shot, the Minerva and its Gundam pilots desperately fight their way through the enemy lines. But this time, Shinn and Rey are merely decoys, for the success of the operation and the survival of the PLANT rest on Lunamaria's shoulders.