"Foggy" is a bank teller who got his nickname for the thick spectacles he must wear. Foggy is also an inside man for a gang of thieves planning to rob his bank. Unfortunately, their plan goes awry and he is arrested. During the ensuing scuffle, his wife is accidentally killed and the crook blames the arresting officer. While he stands trial, Foggy lets on that he plans on getting revenge by killing the officer's wife. He is sentenced to a minimum security prison farm. Time passes and Foggy begins to change; he becomes a psychotic killer consumed with anger. The fearsome former clerk busts out of prison and takes several hostages. The panicked policeman attempts to secure protection for his wife, but the cops decide to use the woman as a decoy to draw the criminal to them.