On the eve of World War II four Parisians cope with the impending invasion of their city by German forces. While the French government braces for impact, the intersected lives of a young writer, a vain movie star, a French politician and a young scientist are examined as they attempt to deal with war and evade German spies.
Bon Voyage is a 2003 French film directed by Jean-Paul Rappeneau, starring Isabelle Adjani, Gérard Depardieu, Virginie Ledoyen and Grégori Derangère; it's very loosely inspired by Professor Lew Kowarski's smuggling of the world's only supplies of heavy water out of France following its occupation by the Nazis.