Terror grips a small mountain town as bodies are discovered after each full moon. Losing sleep, raising a teenage daughter, and caring for his ailing father, officer Marshall struggles to remind himself there's no such thing as werewolves.
Growing up in post-World War II era Arizona, young Sammy Fabelman aspires to become a filmmaker as he reaches adolescence, but soon discovers a shattering family secret and explores how the power of films can help him see the truth.