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?
Audrey Tautou
as Irène
Faudel
as Younès
Eric Savin
as Richard
Nathalie Besançon
as Marie
Lysiane Meis
as Elsa
Irène Ismaïloff
as Stéphanie
Éric Feldman
as Luc
Frédéric Bouraly
as Bobby
Marina Tomé
as Julie
Saïd Serrari
as Le pickpocket
