Oscar "Manny" Manheim is a ruthless bank robber and hero to the convicts of Alaska's Stonehaven Maximum Security Prison. After two previous escape attempts, Manny is put in solitary confinement for three years. A court order compels sadistic Associate Warden Ranken to release him from solitary. Planning a third break out, Manny is forced to advance his plan to mid-winter after he is stabbed. Manny recruits young prisoner Buck McGeehy to help in the complicated plan. After an arduous cross-country hike, including a swim across a freezing river, the two hop on board a train.