A Sheriff is awakened by his daughter, alerting him of a prowler on their ranch. As father and daughter head out into the woods to track the prowler down, they soon discover they're dealing with something that isn't human.
While at a slumber party, twelve-year-old Olivia is blamed for the horrific and mysterious death of her friend after singing a song, created by a reclusive mastermind, Milo, which summons a demonic figure known as “The Crooked Man.” Returning to her hometown six years later, a string of unusual deaths lead Olivia to believe that she’s still being haunted by whatever she saw that fateful night. Once you sing the rhyme, everyone in the house is cursed to die by his hands.
Betsy, a small-town waitress, offers a warm meal to an enigmatic drifter in a rundown diner. Little does she know she's let a vicious and calculative werewolf loose on the diner's colorful population.
Desta vez Larry Daley e seus amigos heroicos embarcam numa viagem sem precedentes para Londres para salvar a mágica que dá vida a todas as atrações do museu.