Halo Nightfall has, so far, been the biggest live-action endeavor from the series. It was set between Halo 4 and 5 and followed Jameson Locke and his small band of ONI agents as they investigated Covenant activity on distant space colony Sedra. It served as Locke’s origin story as he became playable in Halo 5. It also saw them return to a still-intact section of the original
Halo at night, making it a very dark world to explore.