East Berlin, shortly after the construction of the Berlin Wall. Kurt Schröder and his family dig a tunnel to escape to West Berlin as they struggle to overcome the obstacles blocking their underground path to freedom.

A German expedition is in the African jungles on an unidentified misson. During this mission one of the German explorers, Thoren, is attacked and captured by the local natives called the Botos.

The true story of a German agent sent to the USA in 1944 in order to stop the development of the atomic bomb.