Get a glimpse at the special Season 2 preview you'll get in "The Avengers: Earth's Mightiest Heroes!" Vols. 1 & 2 on DVD April 26! The Avengers face a Secret Invasion!
When the planet is threatened by Super Villains, time-traveling conquerors, alien invaders, mythical monsters or mad robots bent on the total destruction of humanity; when the forces of evil are so overwhelming that no single hero has the power to save the world; when there is no hope left, the AVENGERS ASSEMBLE!