Mystery Pictures is looking for a stunt man. Swee'pea tags along with Popeye, but he sends the tot home. Popeye shows clips of his stunts to the director, who is impressed; when he goes to put on the last reel, Swee'pea, who snuck back in, hands him Lost and Foundry (1937), which features Swee'pea saving the day. The director signs Swee'pea.
Popeye has replaced Bluto in the Spinach Theatre's production of Romeo and Juliet (Olive, of course), much to Bluto's surprise and dismay. Bluto does what he can to sabotage the production, like cranking up the snow and wind machines, and eventually coming onstage, even though Olive wants no part of him.
Crime strikes the vegetable world when Mrs. Mama Carrot awakens and finds her children have been carrot-napped. She summons the Irish-Potato Police and they are soon on the trail of the culprit. But the various suspects they round up, and grill, aren't the criminals. They finally track down the guilty parties, who turn out to be a gang of mice in disguise. Thrown into a third-degree mousetrap, the mice soon confess.
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 spinach and manages some fixes to the system.