Back in the 1920's, "caveman" was a slang term for a man who treated women rough and made 'em love it. We have other names for this sort of fellow today, but those names couldn't be shown on screen back in 1926. Matt Moore plays a rough-and-tumble coal delivery man who through a fluke finds himself in the company of spoiled society girl Marie Prevost. During a posh weekend party, the class-conscious Prevost passes Moore off as a "nutty professor", who's liable to say and do anything. By the time she decides to tell the truth, she's fallen in love with her modern-day caveman. This film is alleged to be the movie debut of Myrna Loy, though research indicates that she was playing bit parts as early as 1925.
by Hal Erickson synopsis