While Task Force Omega is off wrecking havoc behind enemy lines on the new Halo ring, the remaining Spartan II's and Spartan III's, as well as several members of the Spartan-IV program, are sent in on a mission to back up the Marines and ODST's on board of the UNSC Destroyer Forsaken Spirit as they try to retake the partially glassed colony named Harvest, the first colony the UNSC lost to the Covenant. As the tension starts to rise between the ODST's and the Spartans, will they be able to take out the remaining Covenant forces on Harvest?