During WW 2, a Basque shepherd is approached by the underground, who wants him to lead a scientist and his family across the Pyrenees. While being pursued by a sadistic German.
Allied agents infiltrate the Nazi rocket complex at Peenemunde in order to obtain their secrets and sabotage the plant.The film alternates between German developments of the V-1 missile and V-2 rocket (with a German cast speaking their own language) and discovery by British Intelligence of the weapon.
Albert, a cheeky, womanising, door-to door salesman, with a never-take-no-for-an-answer attitude, lives his life for the moment, and with no thought of his future, or the consequences of his actions on the people he encounters.
