Requiem for Vengeance will take place at the European front during the One Year War, a conflict also depicted in the first Gundam series Mobile Suit Gundam.
This series follows the themes such as conflict and love seen in previous Gundam titles, as well as human drama depicted through the clash of pilots who operate humanoid weapons called Mobile Suits.
In the year 0079 of the Universal Century, the Principality of Zeon declares independence from the Earth Federation, plunging the two nations into war. Thanks to a revolutionary new weapon known as a Mobile Suit, the Zeon Force initially gains the upper hand. However, they lacked the power to take control of the entire Earth, bringing the war to a stalemate.
Eleven months into the war, the Earth Federation forces manage to seize a Zeon-controlled base located in Eastern Europe. Among the mixed battalion headed to reclaim this base is Sorari and the Red Wolves division, a Mobile Suit platoon that has just descended from space.