Pietro, a bank burglar, travels in the disguise of an organ grinder and uses his trained monkey as a means of getting the swag. Monk tries to hold out some, but is caught in the act. Officer Piffle and the Pinkerton Pup spot Pietro and the monk at work and start after them. The latter hotfoot it away, the monk, pursued by the Pinkerton Pup, takes to the automobile of the president of the bank, while his luckless master is chased by Officer Piffle and is compelled to use his feet as a means of escape. Finally, after a chase that leads over houses, down chimneys, and through other out-of-the-way places, both culprits land in a station house and are put under arrest.