What Is Halo 2?
You play Halo through the eyes of a character known as the Master Chief, a cyborg commando whom you don’t know much about but whom everyone in the game seems to have heard of and talks about reverentially. Halo takes place in a space-faring future, where Earth’s forces have come into conflict with an alien race known as The Covenant. In the beginning of the game, you’re awakened out of a cryo sleep and learn that The Covenant are trying to obtain a mysterious artifact–perhaps a weapon–on an artificial ring-shaped world known as Halo, and it’s up to you to prevent that from happening.