Envoi de Fleurs is based on incidents in the life of French composer Paul Delmet. Played by popular French singing star Tino Rossi, Delmet is depicted as a man all too willing to give up personal happiness in favor of blind ambition. After carrying on a romance by correspondence with beautiful young Suzanne (Micheline Francey), Delmet is on the verge of marrying the girl. Instead, he allows himself to be talked out of leaving France to further his own career, with disastrous results for all concerned.

Although they have loved each other since childhood without admitting it, a surgeon and a young woman see their love thwarted by life.

Marc, a photographer, works out of love to help Dany, a car thief, to get back on the right track: he offers her to work with him, as a model. But the former accomplices of the young woman compromise this action.

A fashionable singer makes a stopover in the harbor of Cannes, while a radio journalist investigates the fauna of the festival.

Francois is engaged to Isabelle. While going to buy the engagement ring, he meets Sophie, who puts the ring on her finger and does not manage to remove it. Francois follows in the footsteps of Sophie, who is married to an important merchant, in order to recover his property.

In a settlement in the northern mining country. The Marles, Bréhard and Gohelle families wake up and prepare for a new day at work. The young engineer Larzac, newly appointed to the mine, will soon oppose the authoritarian and conservative methods of his superior Dubard. Georges Gohelle would like to marry Marie Bréhard, but housing difficulties thwart their plans. Brezza, a Polish immigrant, who must return to his country, would like to hate his marriage to Louise Gohelle. Roger, Marie's little brother, has just turned 14. He does not want to go down to the mine as his elders have always done. He will however have to resign himself to it. Marles evokes for him the social struggles of 1906. Roger is injured during a landslide. In front of his family and his friend Marles, who had come to the hospital, he announced his decision to continue his profession. Larzac, invited to the Marles, reveals that he refused a quiet position at the Charbonnages de Paris. He too stays.