The American successful architect Michael Lewis travels to London with his partner and friend, the builder Jake, to refurbish an old hotel. Michael is having successive nightmares, and once in London, he realizes that twenty-one spirits are trying to contact him to solve murders of a serial killer. Michael, with the support of Jake, Detective Pryce and the ghosts, try to avoid the ninth crime and find the serial-killer.
Former police psychologist Rob helps to save young Chrissy when she is about to commit suicide by jumping of 21st-story balcony with her 4-year-old son Jake. When he persuades her to go on a date, they are trapped with Jake in an elevator after a drunken gang crashes into the elevator's engine room and creates havoc.
