Bertha is making cuckoo clocks. Roy wonders why a clock has got 'hands' instead of 'arms'. Miss McClackerty discovers that tomorrow is the 50th anniversary of Bertha's installment at Spottiswood & Co.
Mr. Willmake receives an order to make 365 springs. Roy and T.O.M. have great difficulty transferring the whippy, springy steel that is to be used to make the springs from the dispatch dept. to Bertha.
The Spottiswood Factory is making jigsaw puzzles. But Bertha the big machine is keeping some of the pieces to herself to make one of her own. Tracy designs a robot to help around the factory, a 'Talk Operated Machine', or Tom for short.