The stooges are private detectives looking for a missing millionaire. They wander around the millionaire's spooky mansion confronting various crooks and a dangerous dame. The stooges vanquish the crooks (Shemp uses his "trusty shovel") and find the missing man.

Joe's wife, who thinks he's been carrying on with another woman, moves out.

Shemp has to get married within seven hours in order to inherit $500,000. Now that's incentive! The bumbling threesome set to work right away with hilarious results.