The Laurel &amp. Hardy Transferring Co. possess a hard job on the hands (and backs): hauling a person piano up a massive flight of stairs to Prof. von Schwarzenhoffen's house. Their task is complicated by way of a sassy nursemaid and, unbeknownst to themthe impatient Prof. von Schwarzenhoffen himself. But the greatest problem may be that the force of gravity, which repeatedly pulls the piano back . Finally, the irate Professor explodes in fury to discover the"mechanical blunderbuss" inside his dwelling, not knowing it was a surprise birthday gift from his wife.