Five men have to prove their innocence when a blackmailer is murdered.

After a tumultuous first marriage, Millie Blake learns to love her newfound independence and drags her feet on the possibility of remarriage. The years pass, and now Millie's daughter garners the attentions of men - men who once devoted their time to her mother.

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.