The "Charmed" actress has previously directed short films, including 2014's "Dawn" and "Ruth", and "Woman's Womb" in 2017, and the star revealed she is now planning to helm her first feature-length animated project.
"It's about a little dog who hides in the closet, and once she comes out of the closet she becomes the queen of a land called 'Pomerania'," she told The Hollywood Reporter. "And she's at war with Muttlandia, where all the mutts are. So, it's all about race, breed, classism - and it's very funny."
The 45-year-old is also developing a psychological horror project called "Sleepwalk", another collaboration with "Dawn" screenwriters Joshua Miller and M.A. Fortin.
McGowan, an outspoken #MeToo movement campaigner, has turned her back on acting, claiming that she was blacklisted from good roles after she spoke out about Harvey Weinstein allegedly raping her in the '90s. He denies the allegation, which she made publicly in late 2017.
However, while she hasn't changed her mind about her decision to work behind the camera, McGowan admitted she does miss performing.
"People in Hollywood have not been brave enough to step up for me as I stepped up for them. Because I helped to clean out the system and they haven't been brave in return," she explained. "So, I do miss performing but I feel like acting is in the past, mostly because of the lack of support that I've gotten."