A foreign language sci-fi movie is headed to U.S. movie theaters this spring, but audiences won’t have to groan about subtitles. For the first time, an international feature film will look and sound as if it was made in English thanks to artificial intelligence.

Though the supernatural Swedish adventure “Watch the Skies” was made in its native tongue, AI company Flawless has digitally altered the film’s images and sound so character mouth movements and speech will be perfectly synced for English speaking viewers. The tech uses voices of the original cast to create dubs, and is compliant with SAG-AFTRA.

AMC Theatres, the nation’s top movie chain, has committed 100 screens to the project in the top 20 markets across America. Flawless has partnered with distributor XYZ films to roll the film out to cineplexes on May 9.

“For the movie industry, this is a game changer,” producer Albin Pettersson...