"Deep in space, the Avengers join the intergalactic fight cosmic invaders on a collision course with Earth. The Builders have already decimated the forces of the warlike Skrull Empire--what chance do even Earth's Mightiest Heroes stand? And when betrayal strikes the Council of Worlds and the Avengers find themselves prisoners of war, one last desperate plan is hatched! Galactic empires fall and rise--and as Earth is targeted, the Avengers race back to their own solar system. But will they be in time?"--Unedited summary from the book.