Earlier today, Ant-Man began filming in Atlanta. Now, Marvel has released the official synopsis and cast listing which has a couple of pleasant surprises. The two best pieces of news for us here are that John Slattery will be appearing as Howard Stark and Judy Greer has joined the cast.

Set for release in the United States on July 17, 2015, the film is directed by Peyton Reed (“Bring it On,” “The Break-Up”) and stars Paul Rudd (“I Love You Man,” “Role Models”) as Scott Lang aka Ant-Man, and Michael Douglas (“Behind The Candelabra,” “Wall Street”) as his mentor Dr. Hank Pym and Evangeline Lilly (“The Hobbit: The Desolation of Smaug,” “Lost”) as Hope Van Dyne, daughter of Hank Pym.

The film also includes outstanding additional cast including Corey Stoll (“House of Cards,” “The Bourne Legacy”), Bobby Cannavale (“Danny Collins,” “Annie,” “HBO’s “The Long Play”), Michael Peña (“End of Watch,” “American Hustle”), Abby Ryder Fortson (“Togetherness”), Judy Greer (“13 Going on 30,” “Dawn of the Planet of the Apes”), David Dastmalchian (“The Dark Knight,” “Prisoners”), Wood Harris (“Remember the Titans,” “The Wire”), John Slattery (“Mad Men,” Marvel’s “Iron Man 2”) and Gregg Turkington (“The Comedy,” “On Cinema”) and multi-hyphenate T.I. (“American Gangster,” “Takers”).

Official Synopsis:
Armed with the astonishing ability to shrink in scale but increase in strength, con-man Scott Lang (Paul Rudd) must embrace his inner-hero and help his mentor, Dr. Hank Pym (Michael Douglas), protect the secret behind his spectacular Ant-Man suit from a new generation of towering threats. Against seemingly insurmountable obstacles, Pym and Lang must plan and pull off a heist that will save the world.