Microsoft has announced plans to launch a live action Halo web series this autumn in the run-up to Halo 4's November 6 release.
Titled Halo 4: Forward Unto Dawn, it'll be viewable on entertainment website Machinima and online community Halo Waypoint, Variety reports.
The platform holder said the project represents "the largest investment" it has made in live action to date.
While the director and cast won't be revealed until Comic-Con in San Diego this July, the series will span five weekly instalments lasting around 15 minutes each.
It'll tell an original story about how Master Chief inspired a young UNSC cadet who eventually becomes a leader on the UNSC Infinity spacecraft. According to Variety, the introduction of the new character will tie in with the plot of Halo 4.
"Microsoft had to make sure that the web series didn't just appeal to hardcore Halo fans," said Frank O'Connor, franchise development director at 343 Industries.
"We needed a way to ensure there was a way for people to get onboard this universe without feeling intimidated. [Halo 4: Forward Unto Dawn is] an origins story that teaches you about a lot of different facets of the universe."
Microsoft said it plans to package the web series in some other form after it has aired so that it lives on, so presumably you'll be able to download it it via Xbox Live at some point.
Matt McCloskey, director of franchise business management at 343, said: "We wanted to go way beyond that and transform this live-action exploration from advertising into a full standalone product that people will enjoy."
Check out the latest batch of gorgeous Halo 4 screenshots and concept art.