Marvel's Avengers Assemble - Season 1 Episode 22 -

Iron Man comes face to face with Galactus who is determined to make Earth his next meal, but Galactus finds a new herald in Tony Stark when he's led to another planet... one that is under the protection of the Guardians of the Galaxy! Now the rest of the Avengers must team up with the Space Knights to stop Galactus from feasting and save Tony!