Demi Moore stars in Coralie Fargeat's horror film 'The Substance', which explores themes of aging, body image, and societal pressures on women through a body-swap narrative. The film, which has received critical acclaim and an 89% score on Rotten Tomatoes, features Moore as Elisabeth Sparkle, a fitness guru who undergoes a rejuvenation experiment that creates a younger version of herself. Despite its rave reviews, the film is projected to have a disappointing box office debut, expected to earn around $3 million, the lowest among new releases. Critics are calling Moore's performance her best yet, with early Oscar buzz surrounding her role. The film combines horror with dark comedy, offering a satirical take on the entertainment industry's obsession with youth. 'The Substance' is set to hit theaters on September 20, 2024.