At Christmas time, 17-year-old Ashley is babysitting precocious 12-year-old Luke Lerner. Luke has romantic feelings for Ashley and unsuccessfully attempts to seduce her while watching a horror film. Strange happenings outside put Ashley on edge, but it ultimately appears to be just Luke's best friend, Garrett, who has stopped by to hang out. Hearing a window break upstairs, the trio find a brick inscribed with "U leave and U die." Garrett panics and runs out the back door, but is apparently killed by an unknown shooter.