Kevin Lennihan is a con artist. But this time he's framed and comes before a judge. By claiming insanity, he hopes to get off the hook. He manages to end up in a hospital on Governors Island, in New York Harbor for a mental examination. That night, a storm breaks out over the area, and the electricity to the hospital is broken. In the ensuing chaos that follows, Kevin is taken for a doctor, Eddie Slattery. Suddenly, he is in charge of a whole hospital.