Carol Danvers, in her super hero identity of Ms. Marvel, The throwdown you've been waiting for - and that Loki, God of Mischief - has been scheming towards: THE MIGHTY AVENGERS versus THE DARK AVENGERS! Hank Pym's team has tried their best to be a shining light in the world of Dark Reign but this might be the time that light gets snuffed out! Then a rag-tag team of Mighty Avengers are thrust onto the front lines of SIEGE...with no one to lead them! And where's HANK PYM? Trapped in Pym-Space with his greatest enemy, his sinister cybernetic 'son', ULTRON! Special appearance by the MIGHTY THOR! Collecting MIGHTY AVENGERS #32-36.