NEXT AVENGERS: HEROES OF TOMORROW is the fifth in a series of animated films based on Marvel Comics, and this one picks up after Ultron has killed almost all of the original Avengers. Their children were whisked off by Tony Stark, aka Iron Man, and isolated from danger in a biodome in the Antarctic. Now, 12 years later, Ultron and his robot armies have taken control of half of planet Earth. Through a series of unfortunate events, the Next Avengers' secret location is revealed, and the neophyte superheroes must defend themselves and fight off an army of Iron Avengers, robotic copies of their own parents. They are joined by a young Avenger named Hawkeye who was mistakenly left behind to fend for himself.