A mysterious diver hiding in Amsterdam's canal system embarks on a rampage of gruesome murders, terrifying city officials and leaving few clues for the city's best detective, who doesn't suspect that both his new girlfriend and twelve-year-old daughter may be closer than he is to finding the killer.

A low-class antisocial family ends up in a rich upper-class neighborhood and causes all sorts of trouble.

A lift technician finds himself drawn into a web of mystery and peril as he investigates the perplexing deadly accidents occurring in the elevators of a new office building.

The mayor of Sunny Dale see a chance to get rid of the Flodder family: They send the asocial bunch for an international exchange to New York. There they get confused with a Russian delegation of medical doctors while the street worker Werner who accompanies them becomes imprisoned.

Back from their trip abroad, the family must meet the people of the neighborhood while preparing for the 25th anniversary of Zonnedael. Ma falls in love with a bum that is not exactly what he seems to be.