Udo Berger, aspiring writer and wargames champion of Stuttgart, decides it is time to take his new love, Ingeborg, on holiday to the Costa Brava. He brings along his new game, The Third Reich, which he plans to practice for the upcoming wargames tournament in Paris, where he will finally meet the sleek American champion, Rex Douglas. However, things take a sinister turn when some shady locals arrive on the scene and one of Udo's friends disappears...