review of Next Avengers: Heroes of Tomorrow(2008)
Next Avengers: Heroes of Tomorrow is set in a possible dystopian future of the Marvel Comics universe, where the Avengers arch foe, the robotic Ultron, has succeeded in finally defeating the Avengers, killing most of them, and taking control of half of the planet. Iron Man (Tony Stark), however, survived the initial attack. He manages to rescue the children of the Avengers and hide them away. He then raises them together as a family, training them as he thinks their parents would have. Preparing them for the day that Ultron finally tracks them down.
That day comes when the Vision (another surviving Avenger — a robot with the powers of density control, here being used to render himself intangible and having acted as a spy for Tony) arrives, heavily damaged by Ultron’s forces. While Tony tries to repair the Vision, the children follow him into his underground laboratory and accidentally discover robotic versions of their parents — the Iron Avengers — created by Tony, and unintentionally launched by the children. The Iron Avengers follow their programmed orders and are off to attack Ultron; this is futile, as Ultron quickly reprograms them to be his servants, and follows their trajectory back to Tony and the children.