After the team disbanded last issue, the beginning of this story sees Hank Pym left alone in his infinite Avengers Mansion, trying to ignore the events of Siege while concentrating on his own endeavors. Meanwhile, the remaining members of the team get together for one last mission, the results of which are currently playing out over in "Thunderbolts."
So, for now, "Mighty Avengers" has essentially become Hank Pym’s solo title, with Jocasta and Jarvis as the supporting cast. In a way, this makes sense -- Pym has been the book’s anchor throughout Slott’s run, and the focus on the “traditional” Avengers cast was a large percent of the book’s reason for existing in the first place.
If you’re looking for a “Siege” tie-in, this is perhaps not the place for you. Pym’s involvement with the events in Asgard extends only as far as watching a news report about them and deciding that he can’t afford to change his focus, and the Mighty Avengers heading off for a fight in someone else’s title. As far as crossover material goes, it’s a bit wanting. If, however, you’re just after another issue of "Mighty Avengers," this is it.
If you’re wondering what sort of events could potentially overshadow Siege, well, let me tell you: the return of Ultron. For obvious reasons, Pym’s involvement with Ultron explains why he finds that far more important to address. There’s a sense that Ultron has been seen a little too frequently of late. It wasn’t so long ago that he was the villain in this series, and the “Annihilation” crossover at the same time, so while it’s always nice to see a classic Avengers villain, there’s a bit of a “been there, done that” feeling about Ultron – but then, with his run drawing to a close soon, it’s hard to begrudge Slott the chance to tell his Ultron story.
It isn’t just there for the writer, however, as Ultron is the obvious choice of villain to illustrate Pym’s growth as a character. He began Slott’s run underrated, if not outright pitied -- but now, he’s ready to lead the charge against his wayward android “son”. Although the ideas of Ultron declaring himself the “Ultimate” version of the character (which we’ve seen before...) and an infinite number of Jocastas as his robot “brides” come over a bit too Twilight Zone-rejects, there’s still a certain charm to Slott’s take on the book that means it works -- just about.