Alfalfa is a private eye, and with the help of Buckwheat and Porky, tracks a couple of suspects, Leonard and Junior, who are accused of stealing Darla's box of candy. The two little kids get into the cab of a flatbed truck, so the three sleuths climb in back and hide in a box. Leonard and Junior, however, simply exit the opposite side, unknown to the older boys. It turns out the truck is taking supplies to a haunted house carnival ride, which is where the boys find themselves, but they think their encountering actual spooks.
