M.T. Dome out of a job spies a sign in the window of a piano salesroom, stating that they want a boy. He disguises his age by turning up the legs of his trousers, applies for and secures the position. He is immediately put to work cleaning up and is supplied with pail and brush, but misunderstands his instructions and at once proceeds to scrub a costly and highly polished piano. The manager interrupts Dome in his ruinous occupation and sets him to work washing the show windows. He gets into difficulties with his long handled brush and the passing pedestrians. He is subsequently sent out with the piano tuner to assist him on a job and which happens to be at the home of the proprietor of the piano emporium. Upon their arrival the lady of the house leaves in order to escape the horror of the incessant banging incident to the tuning of the piano. They start to work and M.T. Dome having an ear for music takes command of the job, creating havoc to the piano case with his careless handling of the tools. The daughter of the house, not able to stand the discord, disregards her mother’s instructions and goes for a walk and then the fireworks begin. M.T. Dome falls into the upright piano and emerges amidst a tangled mass of wires and other wreckage. Not table to get at the works to his satisfaction, he opens a way with saw and ax. About this time madame returns and finds her piano on fire, Dome having carelessly thrown a lighted match in the works. The boss is phoned and arrives on the job in double quick time and hastily and forcibly fires Dome from the premises. Picking himself up, and after running several blocks to escape his infuriated employer, he observes the daughter approaching and in rubbering after her witnesses her run down by an auto. Inspiration comes into his bonehead and he rushes to the rescue, commandeers a passing auto and takes her home, where he is forgiven by father and mother and handsomely rewarded.