Scientists of the old world stored genes of thousands of species in a vault in the hopes that one day someone would populate the world once more. But when a scientific corporation of the new world found the vault, they started to do experiments with humans to create the Zoomorphs, creatures better adapted to survive in case the monsters of the Apocalypse decided to strike back. What they did not know, was that the Zoomorphs would rebel against them, developing their own culture and society, building their own city, the Imperial City of Manfall, and developing a profound sense of nationalism that made their military force one of the strongest ever seen.
Their city was the first one under the Sect of Metal's radar when they decided to traverse the mountains of the Wastelands to preach the word of the metal, and needless to say, the Sect was not welcomed there. The Zoomorphs were ready for a war, but when they saw that there was more to lose than to gain with it, they found a solution. They would decide who was the strongest in the good old way of Metal City: the Tournament.
Assigned to the HMM Tournament, the Peacemaker Crew consists of three members of the Cerberus Army: General Brian Steel, Thor Grey, and Apollo Grey, the commander, gunner, and driver, respectively, and they are ready to show all humans their superiority.