What goes in to the phrase, "Let's go to the movies"? An off-screen narrator takes us back to the earliest days of film: clips remind us of early stars and blockbusters. He explains how sound came to motion pictures: we see Jolson singing "Mammy" and John Barrymore playing Richard III. Next is a salute to the 30,000 people working in Hollywood at 272 different crafts. A montage shows us some of those jobs. It ends with a look at the physical production of celluloid (cotton and silver) and the many aspects of movie making. The narrator promises more short films about each step in production.