Don't let the word "documentary" turn you away here—this is essentially a 10-minute trailer for Halo 4, with a ton of in-game footage from the upcoming release. It's also a fascinating look into how Bungie, the creators of the game, plan on taking the story in the future. It looks like look the notoriously quiet Master Chief is actually going to get some story development this time. 

H/T: Kotaku