(U.C. 0079.04.26 - 0079.04.27) The Federation forces are routed in face of the onslaught of the Zeon Zakus during Earth Drop Operations. When the main forces are retreating for resupply, Lt. Ben Barberry, who leads an anti-mobile suit special tactical squad utilizing the "Regina" missile launcher, is ordered by his arrogant superior, Col. Michael Colmatta, to advance and ambush the pursuing Zeon forces. Unknown to others, Barberry, who loses every subordinate in the previous engagements, is frequently haunted by a spirit called Shinigami, who patrols the battlefield collecting souls of fallen warriors.

(U.C. 0079.07.21 - 0079.07.26) Sgt. Rayban Surat is transferred to the 1st Platoon, 301st Tank Squadron of the Federation's 44th Hybrid Regiment to become the driver for Lt. Harmon Yandell, a seasoned ace of the variant-5 Type 61 tank. However, Yandell is a man with his own demon — he survived an encounter with Zeon's feared "White Ogre" Cpt. Elmer Snell at the cost of his left leg, and sees himself as a homeless dead man walking. His previous drivers have either been killed, or gone insane seeing the Death Deity haunting Yandell's back. After seeing Yandell's irrational behavior, Surat asked his commanding superior, Col. Colmatta, to relieve Yandell's command. Instead of doing so, Colmatta approved Yandell's mad plan to launch a night assault on the oncoming Zeon force, led by no other but "White Ogre".

(U.C. 0079.11.08 - 0079.11.09) Though Operation Odessa is proceeding, the 44th Hybrid Brigade suffers setback after its advance is bombarded by artillery from Zeon's Dobday-class land battleships. They are reinforced by three Guntanks piloted by a trio of convicts led by Lt. Arleen Nazon, a technical officer blamed and condemned to rot in jail after her lover defected to Zeon with information of the RTX-440 project. Bearing deep hatred to the man who betrayed her, Clyde Bettany, Arleen vows revenge for destroying her future.