1806: the prussian town of Kolberg is threatened by the advancing troops of Napoleon’s army. Against the relustance of the town commander Lacanou mayor Nettelbeck tries to organize a home guard. He is decided rather to let the town be destroyed by french artillery than handing it over to the French. But the predominance of the French seems to be too strong. Only when the town is imminent danger of being taken, the Prussian general Gneisenau manages to avoid the catastrophy with a cunning stratagem.