James Bond, a Royal Navy air crewman who is recruited into MI6's newly revived Double O program after miraculously surviving a deadly covert mission in Iceland.
Months after the UNSC suffered a devastating defeat. Master Chief, aided by a pilot and a new AI known as "The Weapon," fights a ruthless mercenary faction called the Banished on Zeta Halo to stop them from unleashing "The Endless," an ancient alien threat.