The Marvel Universe has been left with its greatest villains holding more power and control than ever before. On the brink of madness, Osborn, in his final bid to take total control, targets the final obstacle in his mission...Asgard.

Lines have been drawn, and an unlikely hero will save one Avenger, but they can't save them all. Siege has begun and it claims its first victim as an Avenger will die!!

Lives are changed. Heroes fall. Revenge is enacted on a massive scale. And when the dust settles, who will be in charge of the Marvel Universe?

Collects Siege (2010) #1-4 & Siege: Cabal Norman Osborn has one obstacle left between him and world domination...Asgard! Will he take control and become all-powerful? Can the Marvel heroes trust each other long enough to stop him? What will be left when the dust settles?