This espionage film is an important part of the German history concerning the devided Germany. Hansjoachim Tiedge tells the story about his own destiny. He was civil servant in charge in the Federal Office for the defence of the constitution and caused the biggest espionage scandal in the history of the BRD in 1985.

In 1985 the drinker Tiedge drives from Cologne to Berlin and hands himself over into the hands of the authorities at the frontier. As a specialist in the defence of the constitution he tells secrets to the national security in several interrogations, that take the time of three years. But suddenly Tiedge flees. The president of the office for the defence of the constitution resigns and the covers of German agents are blown of.