Don Lockwood (Gene Kelly) is a popular silent film star with humble roots as a "hoofer" and stuntman. Don barely tolerates his vain, cunning, spoiled, conniving, and shallow leading lady, Lina Lamont (Jean Hagen), though their studio, Monumental Pictures, links them romantically to increase their popularity. Lina is convinced that they are in love, despite Don's protestations otherwise.

At the premiere of their latest film, The Royal Rascal, Don tells the gathered crowd a version of his life story, including his motto: "Dignity, always dignity." His words are humorously contradicted by flashbacks showing him alongside his best friend Cosmo Brown (Donald O'Connor) ("Fit as a Fiddle"). To escape from his fans after the premiere, Don jumps into a passing car driven by Kathy Selden (Debbie Reynolds). She drops him off, but not before claiming to be a stage actress and sneering at his "undignified" accomplishments as a movie star.

Later, at an after-party, the head of Don's studio, R.F. Simpson (Millard Mitchell), shows a short demonstration of a talking picture,[a] but his guests are unimpressed. To Don's amusement, Kathy pops out of a mock cake right in front of him, revealing herself to be a chorus girl ("All I Do is Dream of You"). Furious at Don's teasing, she throws a cake at him, accidentally hitting Lina in the face, and then flees. Don becomes smitten with Kathy and searches for her for weeks, with Cosmo trying to cheer him up ("Make 'Em Laugh"). While filming a romantic scene, a jealous Lina reveals that her influence is behind Kathy's loss of work and subsequent disappearance. On the studio lot, Cosmo finally finds Kathy quietly working in another Monumental Pictures production ("Beautiful Girl") and they reconcile. Don sings her a love song, and she confesses to having been a fan of his all along ("You Were Meant for Me").

After rival studio Warner Bros. has an enormous hit with its first talking picture, the 1927 film The Jazz Singer, R.F. decides he has no choice but to convert the next Lockwood and Lamont film, The Dueling Cavalier, into a talkie. The production is beset with difficulties, including Lina's grating voice and strong Brooklyn accent. An exasperated diction coach tries to teach her how to speak properly, but to no avail. In contrast, Don fares better when taking diction lessons ("Moses Supposes"). The Dueling Cavalier's preview screening is a disaster; the actors are barely audible thanks to the awkward placing of the microphones, Don repeats the line "I love you" to Lina over and over, to the audience's derisive laughter,[b] and in the middle of the film, the sound goes out of synchronization, with hilarious results as Lina shakes her head while the villain's deep voice says, "Yes! Yes! Yes!" and the villain nods his head while Lina's squeaky soprano says, "No! No! No!"

Afterward ("Good Morning"), Kathy and Cosmo help Don come up with the idea to turn The Dueling Cavalier into a musical called The Dancing Cavalier, complete with a modern musical number and backstory. The three are disheartened when they realize Lina's terrible voice remains a problem. Still, Cosmo, inspired by a scene in The Dueling Cavalier where Lina's voice was out of sync, suggests that they dub Lina's voice with Kathy's ("Singin' In the Rain"). After hearing Don and Cosmo pitch the idea ("Broadway Melody"), R.F. approves but tells them not to inform Lina that Kathy is doing the dubbing ("Would You"). Having learned the truth, an infuriated Lina barges in on a dubbing session, and becomes even angrier when she is told that Don and Kathy are in love and intend to marry, and that R.F. intends to give Kathy a screen credit and a big publicity buildup. Lina threatens to sue R.F. unless he makes sure no one ever hears of Kathy and that she keeps dubbing for the rest of her career. R.F. reluctantly agrees because of a clause in Lina's contract which holds the studio responsible for positive media coverage.

The premiere of The Dancing Cavalier is a tremendous success. When the audience clamors for Lina to sing live, Don, Cosmo, and R.F. tell her to lip sync into a microphone while Kathy, concealed behind the curtain, sings into a second one. While Lina is "singing" ("Singin' in the Rain Reprise"), Don, Cosmo, and R.F. gleefully open the curtain, revealing the fakery. The defeated Lina flees in humiliation, and a distressed Kathy tries to run away as well, but Don proudly announces to the audience that she's "the real star" of the film ("You Are My Lucky Star"). Later, Kathy and Don kiss in front of a billboard for their new film, Singin' in the Rain.
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== osoby ==			== profese ==
	Arthur Freed		Producent

== osoby ==	== postava ==
Donald O´Connor	Cosmo Brown

cena	festival	ročník	osoba	nominace/cena
Nejlepší herec (komedie / muzikál)	Zlatý Globus	10 (1952)	Donald O´Connor	cena
National Film Registry	National Film Preservation Board	1 (1988)	Maeve McGuireová	cena
Nejlepší film z libovolného zdroje	BAFTA	6 (1952)	Arthur Freed	nominace
Nejlepší film (komedie / muzikál)	Zlatý Globus	10 (1952)	Arthur Freed	nominace