Sarah and her son John, tired of running from the agents sent from the future to kill them, try to stop the formation of the agency in the present, with the help of a girl with a mysterious link to the future.

Now living in London, writer Catherine Tramell sets her lethal sights on Michael Glass, the control-freak psychiatrist assigned to evaluate her as a risk-addicted suspect in the "accidental" killing of a star soccer player. Turns out Catherine's just getting started (or is she?), and that's bad news for Glass's ex-wife, a tabloid journalist, and the Scotland Yard detective who's desperate to put Catherine in jail. Has Catherine finally met her match...