Johnny tries to earn a lot of money by producing a number of tapes of telephone sex lines with Daughter Kees and Son Kees. It goes wrong when one of the tapes is accidentally swapped with a tape of neighbor Neuteboom which he had made for the funeral of a colleague.

Johnny agrees to hide an Italian for a night for 5000 guilders. However, Ma shouldn't find out because Johnny doesn't think she'd agree.

Ma Flodder has grown extremely fond of Vitorio. They are even planning on getting married. Johnny decides it is time for drastic measures.

During a drive, son Kees falls out of the car and hits his head on the pavement, causing him amnesia. He turns into a well-mannered young man who does chores for the neighborhood. This to the frustration of Johnny and the rest of the family. They will try everything to get the old Kees back. Meanwhile, Sjakie is really fond of the well-mannered Kees and decides to introduce two important government people to him.

A baby gets left on the Flodders' doorstep.

In order to make up for a spelling error on merchandise, Johnnie enters Kees in a marathon and resorts to the lowest tricks so she can win.

Son Kees orders a hypnose course in order to get in touch with women.

When a F16 fighter pilot loses his bomb, it falls right into the Flodder's swimming pool. When son Kees finds it, he assumes it's part of the fireworks that Kareltje should deliver because of New Years Eve. Kees starts carrying it around the house not knowing he is causing severe danger to his family. Meanwhile, Sjakie comes along to show his new car to the Flodders.