The Tramp finds himself at a circus where he is promptly chased around by the police who think he is a pickpocket. Running into the Bigtop, he is an accidental sensation with his hilarious efforts to elude the police. The circus owner immediately hires him, but discovers that the Tramp cannot be funny on purpose, so he takes advantage of the situation by making the Tramp a janitor who just happens to always be in the Bigtop at showtime.