There are still water spirits among us. One group lives in Prague, led by Mr. Wassermann, who is using his wife's family as a servants. All they need is their old house near the river. But the house is to be demolished. They have to stop it. And the only way is to drown Dr. Mrácek, who is responsible for the demolition. But he falls in love with Wassermann's niece Jana. He changes to fish, is mistaken for water spirit from Germany, is drowned and revived again. The other problem is the flour with ears... and so on...

Honza and Zuzana are very young husband and wife. They have a little daughter of whom willingly occasionally take care the grandparents and Honza's fifteen-year-old brother Martin. Zuzana continues studying and Honza devotes all weekends as an amateur competitor to the motor-cycles at the speedway. Zuzana is not interested in motor-cycles. Martin holds responsible for his brother's marriage and at the advice of his friend Magda, who is of the same age, invites her sister-in-law to the club of Hucul horses so that she does not feel bored. But by misfortunes and unexplained quarrels both young husband and wife start being jealous of one another.