While James More is held captive by terrorists in Somalia, thousands of miles away on the Greenland Sea, his lover Danny Flinders prepares to dive herself in a submersible into the deep bottom of the ocean, tormented by the memories of their brief encounter in France and her inability to know his whereabouts.
In 1985, against the backdrop of Thatcherism, Brian Jackson enrolls in the University of Bristol, a scholarship boy from seaside Essex with a love of knowledge for its own sake and a childhood spent watching University Challenge, a college quiz show. At Bristol he tries out for the Challenge team and falls under the spell of Alice, a lovely blond with an extensive sexual past.
Though Kevin has evidenced 23 personalities to his trusted psychiatrist, Dr. Fletcher, there remains one still submerged who is set to materialize and dominate all the others. Compelled to abduct three teenage girls led by the willful, observant Casey, Kevin reaches a war for survival among all of those contained within him — as well as everyone around him — as the walls between his compartments shatter apart.