Un aller simple (One-way ticket) is a 2001 French adventure-comedy film directed by Laurent Heynemann, adapted from the novel of the same name by Didier Van Cauwelaert, which had won the Prix Goncourt in 1994.

[1] Aziz (Lorant Deutsch) was born in France, the child of unknown parents.

He is being cheated on by his wife who is having an affair with his boss and he no longer feels attached to his Parisian life.

But Aziz is just a young man without sure roots who has never set foot in Morocco, though he affects to belong to the tribe of the Grey Men of Irghiz who live in a forbidden city high in the Atlas Mountains.

And the two rootless men make the acquaintance of the sparkling Valerie (Barbara Schulz) who will act as their guide.