Master Chief, the UNSC and the Elites have gone through the portal on Earth to discover a massive Forerunner installation. Chief must go down to the surface to clear a space for the frigate, Forward Unto Dawn, so reinforcements can be delivered. Chief and UNSC forces must then battle through lines of Wraiths, Ghosts and even a Scarab to get to the Installations Cartographer to find truths location so he can be put to justice.

Halo 3: The Ark