The year is 2552, and a force greater then we could ever know has found its way to our doorstep. The covenant, the most lethal force in the entire galaxy, has found Earth, and they are here to glass our world and kill us all. Humanity is fighting on its last leg to stop these monsters, but they may be too strong, it may be up to a few loyal humans to stop them, or maybe a traitor from the covenant will join the fight against its own kind... yet again, this fight is long from over...