This trailer for 'Halo: Nightfall' has everything you want: reluctant leaders, former Spartans called back into action, a Halo ring and a human-targeting virus that the Covenant wants.

343 Industries has released an amazing trailer for 'Halo: Nightfall,' telling the backstory of Halo 5: Guardians' mysterious protagonist. Commander James Locke is a Spartan IV super soldier and an ONI secret agent. His role for the Office of Naval Intelligence is that of an Acquisitions Specialist, which includes the procurement and retrieval of important relics, weapons and objects from the enemy. There is some kind of human-specific super virus that is plaguing humanity, and it's up to Locke to rally a team, land on a shattered Halo ring and put a stop to this virus that the Covenant wants.

The first episode of 'Halo: Nightfall' will debut alongside Halo: The Master Chief Collection on Nov. 11.

Nightfall is when Master Chief gets his first round in.