Nostalgic view of the Golden Era of show business and the man who made it glitter--George M. Cohan. His early days, triumphs, songs, musicals and romances are brought to life by the inexhaustible Cagney in a rare and wonderful song-and-dance performance. Told in flashback, covering the Irishman's struggling days as a young song writer and performer to his salad days as the toast of Broadway. Cagney, never more charismatic, dances up a storm, reportedly inventing most of the steps on the spot.