Charles Heller is a CIA cryptographer whose wife is killed in a terrorist attack in London. However, his superiors are dragging out the investigation, so Heller decides to search for terrorists on his own. Since he lacks the necessary skills, he blackmails the agency to send him for special training.

Valerie is left alone in her cousin's house while he is away on business. One evening she calls her friend Sophie to pass the time. During the night, Sophie wakes up to find that the house has been broken into by thieves. She calls her friend Fred, but when he arrives at the mansion, Sophie is not there....