Who else but the fabulous Fred Astaire and Ginger Rogers, the greatest dancing team of all time, could portray Vernon & Irene Castle, the renowned ballroom dancers of the years preceding World War I? Fred and Ginger dance up a storm as they dramatize the careers of the Castles. The pair first unite when Irene persuades Vernon to give up his corny vaudeville clowning to cultivate his obvious dancing abilities. After some lean years, a sharp agent sponsors the team and their rise to fame is phenomenal. Soon they are setting Paris aglow with their stunning routines. Then the first World War intervenes and brings a shocking tragedy. Vernon is killed in a crash on a training field in Texas abruptly ending the Castles' reign on the dance floor.