Sophie (Alicia Silverstone; "Clueless," "The Killing of a Sacred Deer") is a partner at a pharmaceuticals marketing company. Beautiful, confident and nearing 50, she's never been married, no kids, and she likes it that way. Sophie meets Elliot (Karl Glusman; "Civil War," "The Bikeriders"), an unassuming but handsome younger man with whom she quickly strikes up a torrid, sexually-charged relationship. On their second date, she whisks him off to Paris for her lavish work trip. But the moment Elliot expresses interest in turning this fling into something serious, Sophie breaks things off and her seemingly sweet young beau starts to unravel. Their whirlwind romance turns dark as he starts stalking her at work and threatening her at home. Elliot has become a dangerous and unpredictable force and Sophie will be pushed to do whatever it takes to stop him.