Tony Stark's attempt to create a peacekeeping program goes awry when it becomes hostile, prompting the Avengers to join forces and fight against a formidable foe to prevent global destruction.

Avengers: Age of Ultron
When Tony Stark and Bruce Banner's experiment to create a harmonizing artificial intelligence goes awry, a powerful and vengeful force, Ultron, threatens global destruction, prompting the world's greatest superheroes to join forces and stop the catastrophe.