Shortly before an important concert is about to take place at Carnegie Hall, a leak is discovered in a pipe. An emergency call goes out for a plumber. He arrives, but he’s forced to buy a ticket to the concert before he can get into the building. During the rendition of the overture to “The Barber Of Seville,” the plumber appears on stage and nearly “stops the show” when he becomes entangled with various instruments. After having made a shambles of the orchestra, the plumber starts to eat his dinner and requests appropriate dinner music from the conductor. A lady harpist, of most unattractive mien, takes a fancy to the plumber. He notices her, can’t stand her looks, and pours himself a before-dinner martini. After a second martini, however, she looks beautiful, so he asks her to dance. The conductor breaks up the dance and raps for order. The soloist then delivers his aria amongst confusion. He’s carried outside when he gets in the way of the plumber’s pipe and then, as he’s lifted up to the chandelier, he finishes his number to tumultuous applause. The plumber eventually repairs the hole in the pipe by covering it with a Band-Aid, and he presents the conductor with the bill. The conductor throws the plumber out, but he’s caught up by the harpist, who whisks him away on a motorcycle to a park bench. Unable to escape from the lady’s embraces, the plumber does the next-best thing: he transforms her into a vision of loveliness by drinking two more martinis.