Among the locales are remote civilian homesteads, high-tech ONI facilities, and the metropolitan city of New Alexandria. Throughout the game, you will visit various maps on and above planet Reach. You, the player assumes the role of the team’s latest member, SPARTAN-B312 or Noble and will defend Reach from its ultimate downfall at the hands of the Covenants. The game will follow the Noble Team, a six-man operations unit of one SPARTAN-II and five SPARTAN-III. The Covenants have begun their brutal assault on the planet, and the UNSC is trying to halt the brutal alien invaders.
The game takes place on the UNSC fortress during the weeks before the events in Halo: Combat Evolved. Set in the Halo universe, it depicts the Fall of Reach. For new players, the story of Halo: Reach is a prequel to Halo: Combat Evolved.