Snuffy's long lost English cousins leave him with a fortune and a castle.

When an escaped circus gorilla appears to have gone on a murderous rampage, a threatened attorney calls on the detective trio of Garrity, Harrigan and Mullivan to act as bodyguards. In short order, we discover that there is more to the attorney than meets the eye, and the ape may be innocent after all. When a pretty young heiress faces peril, it’s up to our heroic trio to save the day.

A European movie company fronted by a famous French movie actor comes to Los Angeles to set up shop. Mr. Mooney's plans to land their account are nearly scuttled when Lucy becomes inebriated on French champagne.