well its simple, we grab keyes, we discover you lot you lot are trying to activate halo which is (shock horror)! A WEAPON!! so we try and stop you but you will accidently release the flood (that i totally know nothing about at this stage), then in doing so we try and activate halo but learn it kills everybody so instead we blow it up.... but the pesky monitor called 343 industries survives and flies to some gas planet and turns a bunch of you dinos into "heretics" *breath* So your capital will then fly over head and see that halo will be totally -blam!-ed and send your general (guy in gold armour) to kill all the heretics. after which you find a new halo that the big green guy is trying to blow up... yet again... and you and the brutes will have a fall out and start a covie civil war, after which we beat the snot out of you in your weakened state and win the war... oh as well as killing the big daddy flood in the process.... .... my deduction skills are pretty awesome!