Hail, Hydra! The Avengers: Earth's Mightiest Heroes : Season 1 Episode 21
TV-Y7 Disney XD 30m
Aired: April 4th, 2011 @ 10:00 AM EST on Disney XD
The Black Widow requests the Avengers' help in retrieving the Cosmic Cube before AIM and HYDRA tear the world apart fighting over it.
