The Laurel &. Hardy Moving Co. have a challenging endeavor on their hands (and backs): hauling a new person piano up a monumental flight of stairs into Prof. von Schwarzenhoffen's house. Their task is complicated by way of a sassy nurse-maid and, unbeknownst to them, the impatient Prof. von Schwarzenhoffen himself. But the largest problem is the force of gravity, which pulls the piano back to the bottom of the stairs. Last, the irate Professor awakens in fury to discover the"mechanical blunderbuss" inside his home, not knowing it had been a surprise birthday gift by his spouse.