Sophisticated crook talks ex-crook and now respectable business man into one last caper. This highly planned and well executed crime goes off without a hitch until rival bad guys want a piece of the action.
Léandre Brassac is a misanthrope and alcoholic, who lives on a large remote county estate with his wife, Marie. Brassac has a reputation as a violent and unpredictable man, but who has a love for animals, particularly dogs.
With the financing of Jérôme, his brother-in-law, the inventor Albert Raynal manages to develop a revolutionary space rocket. Unfortunately, it fails on its test flight and Jérôme withdrew its financial support.