When a misfit group of unwitting high school students stumbles upon a cursed Aztec Death Whistle, they discover that blowing it unleashes a terrifying sound that summons their future deaths to hunt them down.

When a young American woman is sent to Rome to begin a life of service to the church, she encounters a darkness that causes her to question her own faith and uncovers a terrifying conspiracy that hopes to bring about the birth of evil incarnate.