A war correspondent who was stationed in Paris during WW II married a French girl who was murdered by the Nazis. After the war he returns to to try to find his son, whom he lost during a bombing raid but has been told is living in an orphanage in Paris.
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.