Elaine Bradford is a young singer and dancer, looking for her big break. Peter Carlton is a gossip columnist facing a deadline and a blank page. So, Peter invents "Mrs. Smythe-Smythe", a mysterious Englishwoman who spends her days hunting tigers in India, jumping out of airplanes, and generally driving men mad with her beauty. Since no one in London has ever seen Mrs. Smythe-Smythe, Elaine decides to impersonate the lady, in hopes that the publicity will land her the big break she's been looking for.

Lydia MacMillan, a wealthy woman who has never married, invites several men her own age to her home to reminisce about the times when they were young and courted her. In memory, each romance seemed splendid and destined for happiness, but in each case, Lydia realizes, the truth was less romantic, and ill-starred.

The story of Tommy and Jimmy Dorsey from their boyhood in Pennsylvania through their rise, their breakup, and their personal reunion.