Quatre decides to bring back the Gundams, while Heero, Duo and Trowa try to stop the Mariemaia Army. Meanwhile, the believed-dead Zechs returns and attacks the Mariemaia Army's asteroid base with the new Tallgeese III mobile suit. However, he is forced to stop when Dekim Barton threatens to drop a colony on Earth. No one is able to prevent the Mariemaia Army from seizing control of Earth using their new Serpent mobile suits. After Quatre succeeds in preventing the Gundams from being destroyed, Heero requests that Quatre send the Wing Zero to a specified point in space where Heero will pick it up himself.