Fred Astaire and Cyd Charisse star in Cole Porter's romantic musical laugh at Cold War hostilities. When a beautiful Soviet commissar (Charisse) is sent to Paris to bring a Russian composer home, the American Broadway producer (Astaire) who wants the composer for his next show tries to seduce her with ""decadent"" Western music and fashion. Despite their initial disdain for each other's politics, the commissar and the producer find their own separate peace as romance blooms between the two.