Journey with IGN on a quick adventure through the Halo universe and rediscover (or for you newbies, discover) the Halo story from Halo: Combat Evolved, Halo 2, and Halo 3.  This is all in preperation for Halo 3: ODST which releases this week on Xbox 360.  Go ahead; get caught up, preorder a copy, and PREPARE TO DROP.

[Via IGN]