The Avengers learn what it's like to walk a mile in Hulk's shoes when a Gamma attack by Red Skull turns them into raging monsters - the unlikely duo of Hulk and Black Widow are the last line of defense between the city and the Hulk-Vengers.

Iron Man and Captain America disguise themselves as villains to infiltrate Red Skull's Cabal, but when their disagreements over strategy cause their cover to get blown, they're forced to take on the entire Cabal alone.