"The band is back together! As the Avengers unite once more, they'll have to relearn how to work as a team. And they'd better figure it out quickly before Ultron's master plan kicks into high gear! The mechanical menace has the ultimate solution for the scourge of humanity: replace everyone on Earth with robots! First names on Ultron's list? The Avengers!" -- Back cover.

Television series that follows the adventures of two human children and the dragons whose land they alone can travel to.