Post Arcade writes:
"It’s been over five years since Master Chief’s last adventure, Halo 3. The time since has been filled by a side-story in Halo 3: ODST that focused on events parallel to its predecessor, as well as Halo: Reach, a prequel set just before the original Halo: Combat Evolved. It’s been so long since the Chief last suited up that all many gamers are likely to remember about him is that he’s a gruff-voiced guy in a motorcycle helmet with a grudge against colourful ETs.
So, to help refresh your memory (and bring series n00bs up to speed), here’s a quick primer on everything you need to remember about Master Chief’s previous video game exploits before jumping back into his power armour in Halo 4."