Numerous summer vacationers disappear without a trace, which calls the somewhat idiosyncratic police duo Böswald and Blading onto the scene. The signs quickly point to Rohbrecht, a fisherman. Together with his son Lümmel, he earns extra money by ferrying wealthy tourists across the waters, including the daughters of the wealthy van Peteghem family. In the process, Lümmel and the beautiful Billie van Peteghem fall in love, which is not approved of by all family members. And while the policemen walk helplessly through a dune landscape full of nymphomaniacs and nudists, a horrible suspicion arises...
Summer 1910, northern France. Mysterious disappearances are causing a stir in the region. Inspector Machin and his assistant are investigating.
Numerous summer vacationers disappear without a trace, which calls the somewhat idiosyncratic police duo Böswald and Blading onto the scene. The signs quickly point to Rohbrecht, a fisherman. Together with his son Lümmel, he earns extra money by ferrying wealthy tourists across the waters, including the daughters of the wealthy van Peteghem family.
In the process, Lümmel and the beautiful Billie van Peteghem fall in love, which is not approved of by all family members. And while the policemen walk helplessly through a dune landscape full of nymphomaniacs and nudists, a horrible suspicion arises...