Popeye is trying to take a nap, but he's plagued by house flies that keep landing on him. He gets rid of most of them, but one in particular seems bent on making Popeye's life miserable, particularly after Popeye makes the mistake of flicking it into a can of spinach.
Max Fleischer draws Koko and a haunted house, while his colleague and the janitor mess around with a Ouija board. When Max goes over to take a look, Koko is haunted by ghosts and inanimate objects, and escapes into the real-world studio.
Olive is reading a romance novel and munching on a gift box of candy from Bluto when Popeye drops by. She's too absorbed to notice him, so he feigns illness. The doctors are at a loss for a cure.
Olive has a small leak in a pipe; she makes the mistake of calling Wimpy to fix it, and the even bigger mistake of asking Popeye to help her do something until Wimpy can arrive. Meanwhile, Wimpy keeps realizing he's forgotten his tools, his gloves, etc. and going back. Popeye finally eats his...
"The Einstein Theory of Relativity" is the short version (587 m) of the lost American long version (1219 m) of Hanns Walter Kornblum's original German feature "Die Grundlagen der Einsteinschen Relativitäts-Theorie" from 1922 that is also lost.