Silent documentary introduced via title card: "Let us go behind the motion picture screen, into the shadow land of Make Believe, to meet the men and women who create our photoplays - to follow them in their work from the birth of a story to its first showing in a theater." Then, we're on tour at Metro-Goldwyn-Mayer Studios in Culver City, California (part of what is collectively known, to the world outside, as "Hollywood"), circa 1925. Writers, directors, stars, and other MGM personnel from are introduced - many in the "group shots" are not identified with precision, unfortunately.
Bigger stars, like John Gilbert and Norma Shearer (both in "He Who Gets Slapped"), get special camera consideration. Interestingly, Lucille Le Sueur, "an M-G-M 'find' of 1925 is showcased; she would join the bigger stars after changing her name to Joan Crawford. It's been claimed Ms. Crawford's name was changed for other reasons; but, the presence of established actress Lucille La Verne in this very film makes it obvious Lucille Le Sueur wasn't going to keep her original name. The names Lucille La Verne and Lucille Le Sueur are far too similar.
The (then) better known Ms. La Verne participates in one of this half-hour film's "behind-the scenes" highlights - she and Conrad Nagel are briefly seen directed by Edmund "Ed" Goulding in "Sun Up" (released August 1925); and, director Tod Browning is seen "taking night scenes" for "The Mystic" (also released August 1925). There is less "tour" footage than the title "MGM Studio Tour" suggests. But, you do get a good look at the studio and workers who could, within a year, claim they led "The Big Parade" of Hollywood movie studios.
***** Metro-Goldwyn-Mayer Studios (1925) Louis B. Mayer : Edmund Goulding ~ John Gilbert, Norma Shearer, Joan Crawford