Watch the First "Cat Person" Trailer, Where Nicholas Braun Is a Date From Hell

"Cat Person" is based on Roupenian's short story, which is about a college-aged girl named Margot who begins dating an older man named Robert. After a hookup goes awry, though, she decides to ghost him, and he does not react well to her rejection. That's where the movie deviates from the story's plot, going on to follow Margot as she realizes that Robert has started stalking her.