Granny Jette is getting married! During their visit to Langeoog in the Autumn, Jette’s lively grandson was taken into confidence by granny’s admirer, Günther. He wants to propose to Jette and wants to do it in a spectacular manner. Unfortunately, Günther still hasn’t come up with a dazzling plan for it, but as we know the children are never short of ideas. However, a new neighbour with flirtatious ambitions thwarts the plans, then a winter hurricane has to be survived and in the end, an East Frisian skiing festival including a daring jump from the self-built ski jump is just one of the highlights of a turbulent courtship.