Based on a true story: a recently released convict dreams of one last heist with his old gang before retiring. Posing as electrical workers, they dig a tunnel deep under a bank vault. However, during the job, two rogue members might get tempted to betray them and go with the loot. As the works goes well, at the last moment, something goes wrong...—RealLiveClaude

In Montreal, the middle age thief Marcel Talon has spent a great part of his life in prison. When he leaves his confinement on probation, he promises to his beloved girlfriend Maggy that he will find an honest job and have a decent life with her. Indeed Marcel has schemed the greatest heist to a bank ever happened in Canada, and he joins his old friend Fred Giguère and his non-reliable pal Smiley and proposes to dig a long tunnel underground Montreal along the sewers for three months to reach the cellar of the Montral Bank. Fred's grandson and a friend of Smiley join the gang and along the robbery, an unexpected betrayal of his accomplices Smiley and Savard destroy the retirement plan of Marcel.—Claudio Carvalho, Rio de Janeiro, Brazil