Allied prisoners of war held in a German POW camp during World War II plan and dig escape tunnels beneath the wire, and this film follows their attempt through interviews with historians and, where available, eyewitnesses who lived through it. The account covers the practical mechanics of the escape: how tunnels were engineered and concealed, how soil was disposed of without drawing guards' attention, and what happened to the men once they were outside the fence. It treats the plan as both a feat of organization and a gamble, weighing the ingenuity involved against the real danger the prisoners faced if caught. The film stays close to the ground-level experience of captivity, showing what daily life in the camp looked like and why escape felt worth the risk despite the odds. It is a straightforward historical account rather than a dramatization, built around the same true events that inspired the well-known 1963 feature film of the same name.