 A 1925 Rolls-Royce town car, in modern-day service as a Chicago Loop taxicab, holds old secrets that are gradually revealed to a passenger through a series of frightening apparitions; fearing for her mental health, she turns for advice to a physician who is coincidentally an old-car hobbyist himself. The doctor s interest and his subsequent research leads to a gradual unraveling of the decades-old mysteries surrounding the elegant black town car and its secretive, sinister chauffeur.