The Avengers, including many heroes with a personal connection to Ultron, face off against the robotic villain and his forces.

Journey with a select group of Earth's Mightiest Heroes as they embark on a quest of cosmic proportions! When the Celestial Madonna known as Mantis sends out a space-spanning SOS that's received by the Vision, the Avengers' resident android gathers an elite squad of heroes - including Thor, Scarlet Witch and Silverclaw - to come to her rescue. But what happens when the big bad gunning for Mantis turns out to be the nigh-omnipotent (and Death's main squeeze) Thanos of Titan?

Collects Iron Man (1968) #55; Captain Marvel (1968) #25-30; Marvel Feature (1971) #12; Daredevil (1964) #105-107; Captain Marvel (1968) #31-32;Avengers (1963) #125; Warlock (1972) #9-11, 15; Avengers Annual (1967) #7; Marvel Two -In-One Annual #2; material from Logan's Run #6. See Thanos's bid to become a god and lay siege to Earth, with only the Avengers able to stop him.

The first of a star-studded series of book-length epics featuring some of earth's greatest super-heroes! Brought to you by the legendary creative team of Stan Lee and Jack Kirby!