The Avengers: Earth's Mightiest Heroes - Season 2

After 74 of the planet’s most dangerous villains break out of prison, no single hero can bring them all back in alone, and even S.H.I.E.L.D. cannot contain the threat by itself. Marvel’s most powerful superheroes join forces as the Avengers, working together to capture the escaped criminals and defend Earth from dangers too widespread for any one of them to face alone.