In Happy Death Day, a college student is forced to relive her birthday over and over again. That sounds nice, except for the fact that she's always, always, murdered at the end of it. To stop the loop, she'll have to figure out who is killing her.
Video: A university student is forced to live the same day over and over again. The catch is that it's the day that she's murdered, and she's stuck in her loop until she figures out the identity of the masked person who keeps killing her. Welcome to Happy Death Day.