A young man named Jürgen joins the military. As much as he tries to make a heroic career as a soldier in a rearmed West Germany, he fails utterly and ends up in a bizarre sanatorium.

In the late 1950s, the collectivization of agriculture is in full swing in the East German village of Willshagen on the German-German border. Those in charge have to face many obstacles, especially from a large-scale farmer who is unwilling to join the co-op. All of a sudden, mysterious men in a fancy car appear in the village and show an interest in the rundown manor house. Gossip spreads quickly, and some villagers think there will be a re-parceling of properties and a land swap with West Germany. They assume everything will go back to how it used to be and even expect the count to return to his manor. In preparation, the situation in the village escalates at a fevered pitch.

The film tells the love story of two young couples. According to their social ranks, construction worker Edy is dating employee Siegi, while medical student Dieter is dating art school student Sonja. Rather unintentionally, they exchange partners. During a carnival ball, Dieter makes out with Siegi because he falls for her her fresh and happy girlish manner. Sonja coolly observes this game and sees this intermezzo as a test for their relationship. While Siegi and Dieter vacation at the sea, Sonja falls in love with Edy. Now the die seems to be cast for new constellations. But when both couples stand in front of the registrar’s office, they finally come to their senses.

WWII is entering its last phase: Germany is in ruins, but does not yield. The US army lacks crucial knowledge about the German units operating on the opposite side of the Rhine, and decides to send two German prisoners to gather information. The scheme is risky: the Gestapo retains a terribly efficient network to identify and capture spies and deserters. Moreover, it is not clear that "Tiger", who does not mind any dirty work as long as the price is right, and war-weary "Happy", who might be easily betrayed by his feelings, are dependable agents. After Tiger and another American agent are successfully infiltrated, Happy is parachuted in Bavaria. His duty: find out the whereabouts of a powerful German armored unit moving towards the western front.