In the Eastern European country of Sokovia, the Avengers—Tony Stark, Steve Rogers, Thor, Bruce Banner, Natasha Romanoff, and Clint Barton—raid a Hydra facility commanded by Baron Wolfgang von Strucker, who has been experimenting on humans using the scepter previously wielded by Loki. They encounter two of Strucker's test subjects—twins Pietro Maximoff, who has superhuman speed, and Wanda Maximoff, who has telepathic and telekinetic abilities—and apprehend Strucker, while Stark retrieves Loki's scepter.
