As she does every morning, Lucie takes advantage of her journey to work to lose herself for a while in the pages of a good book. And as she does every morning, she joins her colleagues at the office with a smile. It's a working day just like any other. Then suddenly all activity in the office stops. All attention is turned towards the window of the opposite building opposite and abanner reading: Man Alone. Is it a hoax? A cry for help? Everyone has his own interpretation, and will try, by any means possible, to discover what lies behind this mysterious message.
Denis Podalydès
as Aimé Mermot
Florence Muller
as Lucie, the secretary
Pierre Arditi
as Mr. Borelly
Hippolyte Girardot
as Executive # 1
Josiane Balasko
as Solange Renivelle
Michel Vuillermoz
as Executive # 2
Didier Bourdon
as Captain # 1
Chantal Lauby
as Pascale
Chiara Mastroianni
as Marianne's mother / Client with glasses
Claude Rich
as Backgammon player # 1
Michel Aumont
as Backgammon player # 2
Catherine Deneuve
as Client with the little wardrobe
