Police become suspicious of an unsuccessful artist named James Bellington after a city commissioner of parks and recreation receives a series of bomb threats. Bellington tries to met the official. Since he is carrying a box that might be a bomb, the police stop him. They discover that the box only contains art supplies. Later, at an art museum Bellington is again stopped for carry a suspicious package which turns out to be harmless. The police force Bellington to see a psychiatrist and Bellington tells the psychiatrist that his next bomb threat will be real. The police stop a bomb-carrying Bellington at the museum. He gives everyone in the museum ten minutes to get out and they do. With the museum empty, Bellington's accomplices steal the valuable paintings in the museum. They replace them with fakes painted by Bellington himself. When the theft is complete, Bellington surrenders. He opens the box revealing a harmless alarm clock. Unaware of his part in the theft, the police let Bellington go.