Laurent Firode	...	(Director)
Laurent Firode	...	(Writer)
Audrey Tautou	...	Irène
Faudel	...	Younès
Eric Savin	...	Richard
Nathalie Besançon	...	Marie
Lysiane Meis	...	Elsa
Irène Ismaïloff	...	Stéphanie
Eric Feldman	...	Luc
Frédéric Bouraly	...	Bobby
Franck Bussi	...	The Waiter from the Philosophic Cafe
Marina Tomé	...	Julie
Félicité Wouassi	...	The Vigilant
Antoine Coesens	...	The Clochard
Saïd Serrari	...	The Pickpocket
Lily Boulogne	...	Luc's Mother (as Lili Boulogne)
Gilbert Robin	...	The Destiny Man

Comments: Chance, chaos, destiny, fusion, liaisons.


Summary: How, thanks to what's known as the "Butterfly theory" (a random series of unlinked events), can a young woman and a young man meet ?