Siege: Mighty Avengers

Collects Mighty Avengers #32-36. FIGHT TIME - THE MIGHTY AVENGERS versus THE DARK AVENGERS! 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!