The ghosts of three elderly industrialists killed in an airplane crash return to Earth to help reunite a young couple whom they initially brought together.
Leo Vincey, told by his dying uncle of a lost land visited 500 years ago by his ancestor, heads out with family friend Horace Holly to try to discover the land and its secret of immortality, said to be contained within a mystic fire. Picking up Tanya, a guide's daughter, in the frozen Russian arctic, they stumble upon Kor, revealed to be a hidden civilization ruled over by an immortal queen, called She, who believes Vincey is her long-lost lover John Vincey, Leo's ancestor.
Ollie Dee and Stannie Dum try to borrow money from their employer, the toymaker, to pay off the mortgage on Mother Peep's shoe and keep it and Little Bo Peep from the clutches of the evil Barnaby. When that fails, they trick Barnaby, enraging him.
The mysterious Count Orlok summons Thomas Hutter to his remote Transylvanian castle in the mountains. The eerie Orlok seeks to buy a house near Hutter and his wife, Ellen. After Orlok reveals his vampire nature, Hutter struggles to escape the castle, knowing that Ellen is in grave danger. Meanwhile Orlok's servant, Knock, prepares for his master to arrive at his new home.