Kou, his friend Chuck Keith, and veterans South Burning and Dick Allen follow Gato through the outback in an attempt to recapture the Physalis. Zeon forces ambush them and kill Allen as Gato awaits a Komusai shuttle for extraction. Kou destroys the shuttle but it is actually a diversion - Gato escapes on a submarine that provided covering fire during the Torrington base attack.

Gato flies back to the Garden of Thorns, a secret Zeon colony base in the Shoal Zone, to present the GP02 to Delaz. However, a chance encounter with Zeon commander Cima Garahau rankles him when their ships almost collide. Upon delivering the GP02, Delaz makes an Earth Sphere-wide declaration of war, explaining that the GP02 and its nuclear weapon is proof of the Earth Federation's military buildup. Meanwhile, aboard the Albion, Nina tries to get closer to a dense Kou when the alert sounds. Kou and the rest of the Albion's mobile suit pilots engage the Zeon intruders. However, Nina's warning about the GP-01's poor mobility in space without the so-called Full Vernian (Full Burnern) backpack proves true as Kou crashlands in the Albion under heavy damage.