can someone explain this Halo commercial to me? (halo #3)?

[sunshine_punk]

http://www.youtube.com/watch?v=ozPEn19PgR4
maybe i just dont understand it cuz i never played all of the 2nd and 1st one...
but can someone explain please?

 

[Chaoz]

There;s not much to say. Its just a live reenactment of the games premise, which ins't really accurate. basically they are trying to ell you to buy halo, its that simple