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.

享有“百老汇之声”美誉的伯特柯勒是《世界先驱报》的记者，为求取得轰动效应，不惜各种手段来挖掘名人的花边新闻。百老汇制作商罗伯特高登一直为他的新剧“百老汇旋律”没找到合适的女主角而烦恼。伯特柯勒得知后故意凭空创造出一名法国“著名女星”的假消息让罗伯特上钩。艾琳一直想在百老辉发展，将计就计，于是冒充这名法国女星，籍此出演女主角，谁知……