The Universal Century began with mankind moving its burgeoning population into outer space. In U.C. 0079, the colonies furthest from the Earth, Side 3, proclaim themselves the Principality of Zeon and declared independence from the Earth Federation government. War was waged. Now, nearly a year has passed since that war broke out. In a debris cluster known as the Thunderbolt sector, the remains of many space colonies and battleships destroyed by the war circle. Here, a violent struggle has played by the Zeon Forces that seized control of the sector and the Federation Forces whose mission is to regain it…

During the Full Armor Gundam's second sortie in the Thunderbolt Sector, Io once again confronts Daryl. Daryl narrowly escapes after throwing a Cracker grenade at the Gundam, but he loses his left hand in the process. As the Living Dead Division is desperate to hasten the Reuse P. Device project to combat the Gundam, Daryl has his right hand amputated so that his body will have full control of the experimental Psycho Zaku.