Avengers: Age of Ultron

In the Eastern European country of Sokovia, the Avengers - Tony Stark, Thor, Bruce Banner, Steve Rogers, Natasha Romanoff, and Clint Barton - raid a Hydra facility commanded by Baron Wolfgang von Strucker, who has experimented on humans using the scepter previously wielded by Loki.

They meet two of Strucker's test subjects - twins Pietro (who has superhuman speed) and Wanda Maximoff (who has telepathic and telekinetic abilities) - and apprehend Strucker, while Stark retrieves Loki's scepter.