It is quite rare that a big-budget superhero movie is co-written by its main star, but that's exactly what happened with last year's Ant-Man. After Edgar Wright backed out of directing the movie, star Paul Rudd and his Anchorman director Adam McKay rewrote the script before production started with director Peyton Reed. Back in December, it was confirmed that Adam McKay will help Paul Rudd, Gabriel Ferrari and Andrew Barrer hash out the story for Ant-Man and the Wasp, before Rudd, Ferrari and Barrer sit down to write the actual script. During an interview on the Sausage Party red carpet, Paul Rudd revealed that their initial treatment for Ant-Man and the Wasp is finished.

Unfortunately, Paul Rudd wouldn't shed too much light on the story in his interview with Entertainment Tonight. The actor teased that the story they have come up with is very "preliminary" and could change quite a bit before the superhero sequel hits theaters on July 6, 2018. Here's what the actor-writer had to say below.

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"We've been coming up with the story. We just turned in a treatment, but it's so preliminary. We'll see. We have an idea of what it might look like, but it could change a lot from where we're at now, so I don't really know. There's not really anything concrete, I can tell you."

The actor also chimed in on the latest addition to the Marvel Cinematic Universe, Brie Larson. After months of rumors, Marvel finally confirmed that Brie Larson has signed on to star as Captain Marvel, with the actress coming onto the stage during the studio's Hall H panel at Comic-Con. When asked about what he thought about the actress joining the MCU, he had nothing but positive things to say.

"I love that, Love Brie Larson. I think she's incredible. I think we've very lucky to have Brie Larson in the fold."

As for Ant-Man 2, aside from Paul Rudd and Evangeline Lilly as The Wasp, no other cast members have been confirmed. Peyton Reed will return to direct, but we don't know for sure if other Ant-Man stars such as Michael Pena, David Dastmalchian, T.I., Bobby Cannavale, Judy Greer and Michael Douglas will reprise their roles. Take a look at Paul Rudd's video interview below, and stay tuned for more on Ant-Man and The Wasp.