MARVEL'S BEST VS. MARVEL'S WORST! Set back in the buildup to SECRET WARS, two Earths face off against each other for survival! One is an Earth where the early days of the Marvel Universe never ended, where the Avengers are still the founding lineup, where Spider-Man is still a high-schooler. The other is an Earth ruled by Thanos and the monstrous villains of the Cabal. It's the ultimate heroes vs. the ultimate villains! Can these Avengers defeat a group of foes at the heart of TIME RUNS OUT/SECRET WARS, or were they always doomed from the start?