Starring Paul Rudd as Scott Lang or Ant-Man, Evangeline Lilly as Hope Van Dyne or The Wasp, Jonathan Majors as Kang The Conqueror and Kathryn Newton as Cassie Lang, with Michelle Pfeiffer as Janet Van Dyne and Michael Douglas as Hank Pym, the film is directed by Peyton Reed from a screenplay written by Jeff Loveness. It has been produced by Kevin Feige and Stephen Broussard and the sweeping score for the film has been composed by Christophe Beck.

According to producer Stephen Broussard, the story takes existing characters into new terrain where they encounter a host of unfamiliar faces—some friendly, some not. “‘Ant-Man And The Wasp: Quantumania’ is many things. It’s a family adventure first and foremost. It’s the story of a family of Super Heroes basically being pulled into an adventure within the Quantum Realm, and within that, it becomes an epic sci-fi war movie and a coming-of-age story. It’s a lot of different things wrapped into one film,” says Stephen Broussard.

Talking about exposing a whole new world to the viewers, Broussard says, “It’s a subatomic inner space within the world that we know. We asked ourselves: ‘What does technology look like down here? What does society look like down here? What do religion and politics look like down here?’ I think one of the reasons why the MCU has been successful and had the longevity that it has had so far is that we view new characters and new stories as a chance to kick down the door on whole new worlds.”

The film also features David Dastmalchian as Veb, Katy O'Brian as Jentorra, William Jackson Harper as Quaz and Bill Murray as Lord Krylar.