For Allison Cook, the weekend trip to a horror convention in Virginia is a fun break from work and humdrum reality. Then she meets a guy who shows her a movie that shouldn't exist, one that upends everything she thinks she knows about reality itself. The movie on the old VHS tape is an unseen and unknown installment of a legendary slasher franchise she's loved since the dark days of her unhappy adolescence. As soon as she sees it, she knows the movie...