While practicing, Berlioz the Bear detects a strange buzzing noise coming from his double bass. On the way to the concert with the rest of the bear band, he is so preoccupied with the sound that he accidently runs the wagon into a hole. The lead animal, a mule, refuses to budge, despite a series of animals who unsuccessfully try to pull the wagon out.
At that moment, what should fly out of Berlioz's bass but a very angry bee that takes out its frustration on the mule's hindquarters. The sting does what the other animals failed to do; the wagonload of musicians goes careening into the village at full speed and arrives just in the nick of time.