All the various types of Avengers are all together and though they aren't exactly getting along they've at least stopped fighting and are listening to a big plot to take down the nasty Cabal who are blowing up planets and killing all around them. Take that Cabal! Meanwhile doom impends! Someone returns from the other side of existence and there's something afoot in the Ultimate universe and troubling rumblings in the Shi'ar empire. Very doomy and impending.