As the fortress world of Reach and its brave defenders were bombarded to rubble, a single cruiser fled the carnage with the battle’s only human survivors- Captain Keyes, his crew of a few hundred Marines, and the last remaining SPARTAN super-soldier, the Master Chief.
With the cruiser’s artificial intelligence, Cortana, concealed in his battle armor, the Master Chief crash-lands on Halo in the midst of a massive Covenant occupation. Curiously, the alien soldiers appear to be searching for something hidden on the ring. Built by a long-dead race, Halo harbors many deadly secrets, but one overshadows them all. Now the Master Chief must lead the scattered troops in a brutal race to unravel Halo’s darkest mvsterv- and unleash its greatest source of power...