The continuing saga of Master Chief and The Covenant will be concluded in Halo 3, but, in the meantime, Halo: Uprising will help you get from Halo 2 to where we are now. The comic will bridge the gap between the two videogames, and prepare readers for the story's end, this Fall.
What you're going to find out is all kinds of information you've never known before, including what Master Chief's new mission is, and why The Covenant are so darn interested in Earth. It's going to be an eye-opener, and, better yet, should help pass the time between now and the game's release, which is good.
Comic Book News: Halo: Uprising #1 On-Sale Today