The Avengers: Earth's Mightiest Heroes — Season 1, Episode 21: Hail Hydra!
Action & Adventure, Animation, Sci-Fi & Fantasy, Family • 25 min • 2 seasons, 52 episodes • ★ 8.2/10
Episode synopsis
Black Widow turns to the Avengers for help when Hydra and AIM battle over control of the Cosmic Cube.
About The Avengers: Earth's Mightiest Heroes
The most powerful villains on the planet escape from prison. However, none of the superheroes can stop them without help, not even S.H.I.E.L.D. The Avengers then join forces to fight evil, and discover that as a group they are stronger.