“Without giving away too much, at the end of Halo 5, as you well know, the universe has changed so fundamentally that we have no choice but to tell what I would call a much more human story in the next game. Halo franchise development director Frank O’Connor, in a candid interview with Time, stated that Infinite, as opposed to the previous numbered entry, will focus more on our favorite green-armored soldier and his bombastic escapades:
The survival of humanity is on the line, and Chief must find a way to thwart his enemies’ plans (likely by destroying the halo ring), escape the ring itself, and find a way to save Cortana from her own “rampancy.” Chief will go head-to-head with a new threat, the Banished, as he explores another Halo Array.
In the final chapter of the Reclaimer Saga, John-117 is back, discovered adrift (and dormant) in the cold vastness of space.