Rollicking young superhero tale; lots of cartoon violence.
Parents need to know that this movie centers on the offspring of the original Marvel Avengers and their efforts to battle the villain who killed their parents and threatens the life of their guardian. As such there are themes of parental death and -- not surprisingly -- avenging their murders. The young superheroes battle a seemingly unstoppable Ultron, though the continuous sci-fi violence depicted is very much in keeping with comic book style.