Get ready for the ultimate adrenaline rush with Volume 4 of 'The Avengers: Earth's Mightiest Heroes!'. In these final seven episodes of Series One, Iron Man, Thor, Captain America, Hulk and the rest of The Avengers attempt to stop Ultron and his army of robots from ending all of humanity and prevent Loki from unleashing armies from Asgard on Earth!
Episodes Comprise: 20. The Casket of Ancient Winters 21. Hail, Hypra! 22. Ultron-5 23. The Ultron Imperatiye 24. This Hostage Earth 25. The Fall of Asgard 26. A Day Unlike Any Other