Eg veit ikkje kor Wikipedia har det frå men her er visstnok Reach-plottet:

Halo: Reach is a prequel to Halo: Combat Evolved that takes place during the Battle of Reach near the end of the Human-Covenant War; The game follows the actions of Noble Team, a United Nations Space Command special operations unit composed of six SPARTAN supersoldiers. Players assume the role of the Lieutenant, a replacement for a presumably deceased member of the Noble squad and is identified by the callsign Noble Six. The announcement trailer shows the colony world of Reach, one of the United Nations Space Command’s most important manufacturing and military centers outside of the Solar System, under attack by a Covenant invasion force referred to as ‘them’ by an unknown radio operator. During the world-wide reveal at the 2009 Spike Video Game Awards, members of Noble team were revealed to be Jorge-052, Carter-259, Kat-320, an unnamed sniper, an unnamed heavy weapons specialist, and the ‘Lone Wolf’ Lieutenant.