The sole survivor of terrible train wreck, David Dunn, a security guard, is contacted by Elijah Price, a mysterious stranger who tries to convince David that he has a special gift.

Apartment building superintendent Cleveland Heep rescues what he thinks is a young woman from the complex swimming pool he maintains. When he discovers that she is actually a character from a bedtime story who is trying to make the journey back to her home, he works with his tenants to protect he new friend from the creatures that are determined to keep her in our world.

At the United Nations, a translator overhears discussion of an assassination plan. But when an Fbi agent investigates and digs into the translator's past, he begins to wonder if she is a victim or a suspect.