Sixteen clocks are ticking; sixty-six murdered souls will bring about the end of the world.
Privileged and popular Caleb Mason is celebrating his high school graduation when he receives a disturbing letter from his long-lost childhood playmate, Christine.
Caleb and his jokester buddy Bean take a road trip to Caleb's tiny hometown of Hudsonville, Florida, to find her. Upon arrival, they discover the town has taken a horrifying turn for the worse. Caleb's childhood house is abandoned and his father has disappeared. Children are going missing. The old insane asylum has reopened, and Christine is locked inside. Her mother, a witch, is consumed with madness, and Christine's long-dead twin sister whispers clues to Caleb through the static of an AM radio. The terrifying prophesies of the spirits are coming to pass.
As Caleb peels back layer after layer of mystery, he uncovers a truth more horrible than anything he had imagined, a truth that could only be uttered by the lips of the dead.