Mr. Magoo's dog is threatened by the dog catcher (who Magoo takes for a policeman). He's given until noon to license it. As he's preparing to leave, a circus goes by; he hitches a ride in a clown car (thinking it's a taxi) and, after a digress through the big top and into the gorilla cage (mayor's office), he ends up in the panther cage. He thinks the panther is his dog, and th...