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.
At the end of the 19th century, during a ball in Joinville, on the outskirts of Paris, Georges, a former delinquent working as a carpenter, meets Marie, a young woman connected to a criminal gang.
Paul Martin is the subservient brown-nosing youngster who needs quick advancement up the hierarchy to pay for the modern lifestyle he is buying on credit. Seeing that marrying his immediate superior's daughter will not get him the results he wants, he begins plotting the demise of the head of the company. The company itself specializes in holiday travel and unscrupulously brutalizes its customers for maximum profit, spending more thought on publicity gimmicks than customer service...
