High Quality Content by WIKIPEDIA articles! Halo: The Flood is a 2003 novel based on the 2001 Xbox video game Halo: Combat Evolved written by William C. Dietz. Closely depicting the events of the video game, The Flood begins with the escape of a human ship Pillar of Autumn from enemy aliens known as the Covenant. When the Pillar of Autumn unexpectedly discovers a massive artifact known as "Halo", the humans must square off against the Covenant and a second terrifying force in a desperate attempt to uncover Halo`s secrets and stay alive. Though the book roughly follows the same events of the Xbox game, featuring identical dialogue, Dietz also describes events not seen by the game`s protagonist, the super-soldier Master Chief.