Angela bakes a cake to enter in the Home Appliance Show Bake-Off, but Old Tom eats it by mistake. Feeling guilty, Old Tom decides to bake a new cake to replace it. With Lucy's help, he runs around the expo gathering the ingredients from the food pavilions, and then mixes them all together in one of the expo's spinning rides. Old Tom and Lucy use an appliance exhibit to cook the cake and then race, with Angela, to the Bake-Off - where the cake wins first prize!