Oscar Bonsetter was arrested during a robbery and spends many years in prison, where he befriends an old prisoner Mac. There are rumours Mac has a great fortune from a robbery hidden somewhere. Mac is badly treated by a Gully, a prison guard who tries to get information on where the hidden loot has been stashed. Mac becomes ill, but before dying, tells Bonsetter where the money is hidden. Bonsetter needs a drawing in Mac's cell to get the precise spot, but Gully takes all Mac possessions with him. Gully becomes blinded in a car accident and is not able to work in prison anymore. Three years later, Bonsetter finishes his sentence, gets his freedom and looks for Gully, who owns a small diner. Bonsetter meets Gully's wife Rose, starts working in the diner and becomes her lover, while trying to recover the map from Gully.