Frances works the night shift at a local convenience store, dividing her time between restocking shelves and working on her art. Her routine is broken one night when Devin comes into the store. He claims to be the son of a famous local artist and offers her advice on her drawings. Although he seems to know way too much about her, Frances decides, against the advice of her boyfriend, that he is odd but harmless. By the time she realizes the danger she is in, Devin is completely obsessed with her and convinced that if he can't have her, no one will. Frances will be forced to use all her strength to escape from Devin.