Joseph, hired to become an inventor's new assistant, arrives one rainy Monday morning at Technical Engineer Karl Tobler's splendid hilltop villa: he is at once pleased and terribly worried, a state soon followed by even stickier psychological complexities. He enjoys the beautiful view over Lake Zurich, in the company of the proud wife, Frau Tobler, and the delicious savory meals. But does he deserve any of these pleasures?