On April 13, 2011, Les Films 13 production company turned 50. How can one celebrate an anniversary of this sort ? By simply making "another" film that would sum up all the earlier ones. D'un film à l'autre is hence a kind of anthology of the films produced Les Films 13 since the 1960s (short and feature films written and directed for the main part by Claude Lelouch), a best-of of half a century of cinema, going from Le Propre de l'homme to What Love May Bring. A biography in images of a filmmaker as admired as he is criticized. In reality, D'un film à l'autre is more than a series of film excerpts, interviews, and making-of documents (some of which possess an undeniable historical value, like that from A Man and A Woman, or the final performances of Patrick Dewaere).

A POW in World War II is put to work in a Munich zoo, looking after an Asian elephant. The zoo is bombed by the Americans and the director of the zoo decides it is not safe for his Asian elephant Lucy to remain there. So he sends Brooks to safety with Lucy. They escape and go on the run in order to get to Switzerland.