The Forerunners invoked increasingly suicidal tactics to defeat the Flood. Finally, they activated the omnicidal superweapon known as the Halo Array, leaving behind only a few to enter exile. The ...

The A-plot follows the long-teased execution of the UNSC attack on the Halo Array. Kai leads the Spartan-IIIs on their suicide mission while the Master Chief debates the merits of leaving them to die.