During a Zeon assault on Side 7, the Gundam's original pilot is killed by falling debris. The player steps into the role of an unnamed pilot believed to be a Newtype—boards the mobile suit, destroys a pursuing Zaku, and is forced out into space. Recruited by Commander Bright and introduced to Ryu Jose (known as Duke Jose) and Kai Shiden, the pilot becomes the White Base's primary defender. When Char Aznable's attack fails to destroy the Gundam, he deploys the Thor Cannon to cripple the White Base, forcing it to crash in North America near a gutted desert city. With the Gundam's legs too damaged to use, the pilot sorties in the upper torso mounted on the Guntank before a replacement pair of legs arrives by Gunperry. Breaking through Zeon defenses, the pilot destroys an MS-07B Gouf and eliminates the Thor Cannon. Garma Zabi's forces attack during the retreat; Char orchestrates his ally's betrayal, and Garma dies attempting to ram his Gaw into the White Base. Char then strikes the White Base directly, disabling the Guntank and destroying the Guncannon. The Gundam drives Char out through the launch catapult; Char seizes the beam saber before discovering it only functions on the Gundam's own power supply. The pilot damages Char's Zaku II and forces him to withdraw. Following Gihren Zabi's eulogy at Garma's funeral, the White Base turns toward Jaburo—with Char already in pursuit.