Gordon Miller (George Murphy) has a hit in the works, especially since he latched onto a playwright whose real talent is his singing voice. Now Miller must do a lot of flimflamming to get his musical revue onstage before the rubber check underwriting it bounces his troupe from Broadway to the Bowery. As the typewriter-toting crooner, Frank Sinatra steps into his first top billing in this antic backstage musical based on the Broadway/Marx Brothers-movie hit Room Service. With a nimble cast (including Gloria De Haven, Adolphe Menjou and Walter Slezak) and buoyant Sammy Cahn/Jule Styne songs to go with farce, footlights and Frank, what else can a movie do but Step Lively?