The film begins when Julia Banks is being questioned by a detective in the murder of her psychotic ex-boyfriend, Michael. Julia claims that she has been set up and that she has nothing to do with the murder, despite social media conversations clearly showing Julia lusting after him. The scene then cuts to six months earlier, with Julia getting a send-off from her boss and friend, Ali, from her job as chief online editor for a storytelling website. Julia is now going to work remotely from the mansion she will be sharing with her new loving fiance, David Connover, and her soon-to-be stepdaughter, Lily. Arriving at David's, she is greeted by David's ex-wife, Tessa, who is still not coping with the end of her marriage two years earlier..