State Secretary Herbert Boening is a true careerist: an ambitious, married up-and-comer who, despite all his correctness, keeps a little secret. Her name is Gisela Bachmann, she is a model and he puts up with her, but their secret meeting at a castle this weekend will change a lot of things: The couple misses the moment when the castle gate is locked. The shock of being locked in is worsened when they realize that they are not alone in the castle...