Filmed on location in Atlantic City, Convention Girl is the story of Babe Laval (Rose Hobart), whose job it is to keep out-of-town conventioneers entertained during their visits to the New Jersey resort town. Though Babe has a tough veneer, she's a good girl at heart, hoping someday to escape the lecherous clutches of "tired businessmen" in favor of true love. A likely candidate for romance is gambler Bill Bradley (Weldon Heyburn), but Babe will have nothing to do with him because of his shady profession. After an embarrassing episode with soap-tycoon Ward Hollister (Herbert Rawlinson), however, Bill looks a lot more appealing to our heroine. The supporting cast includes perennial western heroine Nell O'Day, as a convention girl who nearly loses her virtue, and comedian Shemp Howard in a "straight" role as a petty thief.