

After the events of the first two Halo games, Master Chief saddles up with a few ex-Covenant officers and aims to take down the leaders of the Covenant before they destroy Earth.

Following a religious prophecy, the Covenant plans to activate a series of weaponized rings known as Halos, which eradicate all organic lifeforms in a set solar-system. Taking place in the distant future, Master Chief must save Earth from total destruction after a religious pact of aliens known as the Covenant invades the planet.

In Halo 3's main story campaign, players control Master Chief, a super-soldier in the United Nations Space Command military.
