Four prison inmates have been hatching a plan to literally dig out of jail when another prisoner, Claude Gaspard, is moved into their cell. They take a risk and share their plan with the newcomer. Over the course of three days, the prisoners and friends break through the concrete floor using a bed post and begin to make their way through the sewer system – yet their escape is anything but assured.
Michel Constantin
Geo Cassine
Jean Keraudy
Roland Darban
Philippe Leroy
Manu Borelli
Raymond Meunier
Vossellin / Monseigneur
Marc Michel
Claude Gaspard
Jean-Paul Coquelin
Le lieutenant Grinval
André Bervil
Le directeur de la prison
Eddy Rasimi
Bouboule
