1927 Hollywood. Monumental Pictures' biggest stars, glamorous on-screen couple Lina Lamont and Don Lockwood, are also an off-screen couple if the trade papers and gossip columns are to be believed. Both perpetuate the public perception if only to please their adoring fans and bring people into the movie theaters. In reality, Don barely tolerates her, while Lina is just possessive. Meanwhile THE JAZZ SINGER (1927) becomes a big success and the chief of Monumental company decides that Don and Lina have to jump on the talking picture bandwagon, despite no one at the studio knowing anything about the technology. Musician Cosmo Brown, Don's best friend, gets hired as Monumental's musical director and Don has secretly started dating Kathy Selden, a chorus girl who is trying to make it big in pictures herself. Cosmo and Kathy help Don to make the leap to talking picture stardom, with Kathy following along the way. However, they have to overcome the technological issues and, above all, Lina. The actress will do anything to ensure she also makes the successful leap into talking pictures, despite her own inabilities and at anyone and everyone else's expense if they get in her way, especially Kathy as Don's off screen girlfriend and possibly his new talking picture leading lady.