In Halo: Reach, Noble Team defends the planet Reach during the game’s story.
Reach is a major human military and industrial world in the Halo setting. It hosts important United Nations Space Command facilities, shipyards, and training areas, making it one of humanity’s most strategically valuable locations.
The game follows Noble Team, a Spartan unit, during the Covenant invasion of Reach in 2552. Halo: Reach serves as a prequel to Halo: Combat Evolved, showing the events immediately before the original game’s opening sequence. The campaign emphasizes the scale and cost of the planet’s fall.
Reach is sometimes confused with Installation 04, the Halo ring encountered in the first game. Installation 04 is the mission destination after the human ship Pillar of Autumn escapes Reach; it is not the planet Noble Team defends.