I was really looking forwards to this series. It did not start off well. Don't get me wrong, this is certainly an epic story. There is a lot that is going on here, but the execution of the story leaves much to be desired.
I was interested in this story because it was written by Mark Millar. It's the Ultimate's Universe version of the X-men story. There are some subtle differences, as with any Ultimates tale, such as Wolverine starting off as working for Magneto. But in general it follows the exploits of two very powerful and very different mutants. Dr. Xavier leads the X-Men a team of powerful mutants who fight to preserve good will between humanity and mutant. On the other side is Magneto leading the Brotherhood of Evil Mutants. Magneto believes that mutants are the next generation of humanity and here to replace the previous version. The rest of the story unfolds in the usual manner. Wolverine joins the X-Men, Magneto tries to take over the world (in this case just annihilate America), a combination of people from Cyclops, the rest of the X-men, Wolverine, Quicksilver, etc all gang up to stop him.
The interactions between Wolverine and Jean Grey seemed forced. Also for someone who is touted as this supreme killer, Wolverine sure does change his tune after sleeping once with 19 year old Jean Grey. It just seems a bit much. I never really could buy into their relationship. Many of the other relationships seem similarly forced. I understand Pietro doesn't like his father, but the alacrity with which he decided to turn on his father after so many decades of service seemed forced. The X-men themselves are a good version of the group. While there are subtle differences since it is the Ultimates world, there are still many familiar elements.
The art was very disappointing. It did not do the story justice and certain panels made the characters just look ridiculous. If the art had been of a better quality then I think this volume might have eked out a 3/5 rating. But, due to a mediocre execution on what could have been a great story and less than impressive art- I give this first volume a 2/5 rating.