The Reclaimer Saga Begins: Four years after the end of the Covenant War, Cortana and the Master Chief find themselves on Requiem, home to a power far greater than anything humanity has ever faced before. In campaign mode, you will play as the Master Chief, fighting through enemies, both new and familiar, to uncover secrets one hundred thousand years old. Stranded on a distant world with an AI as your only ally, it is up to you to make it out alive.