During a visit to an auction for mobile suit parts on Earth, Lowe Gear from the Junk Guild acquires a unique head from a modified BuCUE suit. This head, when attached to his Red Frame Astray, transforms into a powerful dual beam saber. As Lowe delves into decrypting combat data stored within the head, he finds himself in a skirmish against ZAFT suits, including the formidable CGUE DEEP Arms. In another encounter, Gai Murakamo, the pilot of Blue Frame, teams up with the Serpent Tail mercenaries to ensnare a GINN High Mobility Type unit. Their confrontation escalates when they confront the renowned pilot Edward Harrelson, controlling the impressive Sword Calamity Gundam, fresh from obliterating a ZAFT fleet.