Magnolia Pictures has acquired worldwide rights to “Mayday,” an action fantasy that debuted at this year’s Sundance Film Festival.

“Mayday” is directed by debut filmmaker Karen Cinorre and stars Grace Van Patten, Mia Goth, Havana Rose Liu, Soko, Théodore Pellerin and Juliette Lewis. Magnolia plans to release the film in the fall.

In “Mayday,” Ana (Van Patten) finds herself transported to a dreamlike and dangerous coastline. Once there, she joins a female army engaged in a never-ending war where the women lure men to their deaths with radio signals, like 20th century sirens. Though Ana finds strength in this exhilarating world, she comes to realize she is not the killer they want her to be.

“‘Mayday’ is an exciting, original film with a lot on its mind,” said Magnolia President Eamonn Bowles. “Karen Cinorre has delivered something truly unique.”

“I’m thrilled to be partnering with Magnolia Pictures as we launch ‘Mayday’ into the world,” said Cinorre. “They have been film visionaries from the start, and nothing feels more satisfying right now than bringing a bold female ensemble to the screen with them.”

The film received largely positive reviews when it debuted at Sundance. Variety’s Peter Debruge compared the movie to “Promising Young Woman” and “Assassination Nation” and wrote, “it’s a thrill to see young filmmakers raging against the status quo, which clearly extends to the original way they launch their attacks, and ‘Mayday’ marks a director to watch.”

Cinorre also wrote the screenplay and produced the film. “Mayday” was produced by Jonah Disend, Lucas Joaquin, Sam Levy (who also served as cinematographer), and co-produced by Amanda Messenger. The film is presented by Queen’s Army and Complementary Colors in association with Secret Engine.

The deal was negotiated by Magnolia EVP Dori Begley and SVP of Acquisitions John Von Thaden, and by ICM Partners on behalf of the filmmakers. Magnolia’s Lorna Lee Torres and Marie Zeniter will be launching international sales at Cannes.