An American traveling in Europe suddenly disappears, and his daughter, married to an eminent scientist, receives a letter asking her to go to Antwerp, which she does with her young son. Both are about to disappear. OSS 117 is asked by his superiors to solve these mysterious disappearances.

Adaptation for TV of the play by Friedrich Durrenmatt. A very rich old lady arrives in her nearly bankrupt native village. She is ready to come to the rescue but only if her old lover who had once abandoned her pregnant is killed.