On his journey through the Flemish province, Don Fernando, the king's stadtholder, passes through the small, bourgeois community of Terbrügg. There, he meets Antje, the mayor's wife. To impress the beautiful lady, he gives her his bathtub. It's a sensation in the small town, which has never seen such a tub before. Out of envy and resentment, Antje is pilloried for her "immoral" passion for bathing and becomes the laughingstock of the town...