Escape from East Berlin

When his friend Gunther Jurgena attempts to break out of East Germany by crashing his truck through the Berlin Wall, Kurt Schr?der (Don Murray) watches in horror as he is shot dead by the border guards. So when Gunther's sister Erika (Christine Kaufmann) follows her brother and barely escapes the same fate, Kurt offers to help. Aided by 26 family members and neighbors who also wish to defect, Kurt tunnels under the Wall, unaware that Erika's parents have betrayed them and that armed troops are about to move in. (official distributor synopsis)