The meteorologist Jan Berger was in America for three years, where he carried out tornado field research. When he returned to his hometown Berlin, he discovered that due to climatic changes, tornadoes can also form in Germany. He is certain that a tornado will hit the city. But nobody believes him. Even in the town hall one does not believe a word of him and see no reason to take any precautions. Only the responsible fire protection manager and regional fire director Andreas Schütte slowly but hesitantly takes Jan seriously. Jan has now met his ex-girlfriend Eva again and can only barely escape a tornado with her. Then he notices that a super cell is forming over the metropolis, a preliminary stage for a strong tornado. A race against time begins...