4 years after the destruction of the final Halo and the ending of the Covenant, Master Chief is woken by Cortana.The war is over, he Covenant has been reformed, and there are new Spartans. Shipwrecked on a mysterious world, faced with new enemies and deadly technology, the Chief returns to battle against an ancient evil bent on vengeance and annihilation... the Forerunners. History and secrets will be revealed, another new enemy will come to light, and the Chief will do his best to save humanity, again.