Jerry Mulligan is an exuberant American expatriate in Paris trying to make a reputation as a painter. His friend Adam is a struggling concert pianist who's a long time associate of a famous French singer, Henri Baurel. A lonely society woman, Milo Roberts, takes Jerry under her wing and supports him, but is interested in more than his art.

The plot may be problematic, but such concerns are rendered superfluous by Gene Kelly and Leslie Caron's star power, the Gershwins' classic songs, and Vincente Minnelli's colorful, sympathetic direction.