A hard-boiled police detective sets out to capture a gruesome serial killer terrorizing the canals of Amsterdam.

The mayor of Zonnedael sees a chance to get rid of the Flodder family and sends them for an international exchange to New York.

Back from their trip abroad, the family must meet the people of the neighborhood while preparing for the 25th anniversary of Zonnedael.

A zoo veterinarian gets caught up in a grisly adventure as she finds herself leading the city-wide hunt for a monstrous lion terrorizing the Dutch capital of Amsterdam.