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.

Mr. Mooney's made a bad investment in a "fat farm". Lucy and the Countess volunteer to attend to generate some needed publicity. In no time, the brutal regime has the two starving for food and will stop and nothing to get it.