Watch: Full-length "Ant-Man" trailer

Ant-Man comes to life in a new full-length trailer for the film, giving us a more in-depth look at the superhero flick hitting theaters July 17.

Paul Rudd portrays Scott Lang, a small-time thief recruited to become the titular hero and shrink down microscopically. Scott must embrace his inner hero, help his mentor and pull off a heist that will save the world.

The latest teaser dives deeper into how Scott becomes a superhero. We also see him battling Yellowjacket, played by Corey Stoll. In the teaser, Michael Douglas shows up as his mentor, Dr. Hank Pym.

Marvel's upcoming movie co-stars Evangeline Lilly as Hope Van Dyne and John Slattery as Howard Stark. It also features appearances by T.I., Judy Greer, Hayley Atwell and Bobby Cannavale.