Helmut and Sabine Halm have always managed vacations of lazy privacy at their favorite retreat on Germany′s Lake Constance. So when the energetic, handsome Klaus Buch turns up with his beautiful girlfriend Helene, Helmut is quite ready to dismiss this dimly familiar acquaintance. But Klaus is overjoyed to recognize his old schoolmate Helmut, eager to recall every incident of their shared time, and to display every detail of this successful lifestyle as a fit sportsman and author. The precious days of privacy give way to an unwanted and awkward intimacy, as the Buchs and the Halms hike, dine and sail together. Their joint activities aggravate myriad psychological tensions among the four characters, which are all the more intensely ironic for their peaceful veneer and which must eventually erupt.

Sabine und ihr Ehemann Helmut Halm verbringen ihren Urlaub – wie in den letzten elf Jahren auch – am Bodensee. Dort beobachtet Helmut, ein misanthropischer Studienrat aus München, im Morgengrauen die Vogelwelt, und tagsüber liest er Schopenhauer. Aus dieser Selbstisolierung wird er durch seinen früheren Mitschüler Klaus und dessen wesentlich jüngere Begleiterin herausgerissen. Während Helmut sich gestört fühlt, freut Sabine sich über die Abwechslung...