Everything has been going well for former SFPD lieutenant Randy Disher in Summit, New Jersey, where he lives with Monk's previous assistant, Sharona, and works as the new police chief. But when the city's leadership is arrested for fraudulently inflated salaries, Disher suddenly finds himself as the acting mayor. Now, Disher has to manage the police department and shoulder the day to day responsibility of running a town that is in the midst of a wave of residential robberies. In desperation, Disher reaches out to the one person he knows can solve the crimes: Adrian Monk. When Monk and his assistant, Natalie, arrive in New Jersey, Disher makes them temporary police officers. Summit is about to become the cleanest and most symmetrical city on Earth. But then the string of home burglaries escalates to arson and murder...and someone tries very, very hard to send Monk and Natalie back to San Francisco in coffins.