After fleeing from an overwhelmed human colony Reach, a human ship called The Pillar of Autumn, finds an ancient ring-world, Halo, in unknown space. The Autumn's navy captain, his surviving marines, the ship's A.I, and one of the few remaining Spartan-IIs must fight The Covenant, a collective group of alien races dedicated to the destruction of humanity, for control of the ring-world. However, The Covenant may not be the worst enemy on Halo. Written by
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Referenced in Game One: Episode #1.1