Sjaan forces Lex to abide to new house rules, one of which is: no pets allowed. But his new flame Margot leaves her dog Dirkie for a day, leading to lies and misunderstandings all round.
Laurens Jan is concerned about this receding hairline. Bertus is selling Ruud Gullit wigs. Lex has made two dates with two different women at the same time. Sjaa is holding a cosmetic presentation.
Bertus inherits 100.000 guilders from an old crooked buddy, Louis "De Neus" Duinhoven, and immediately has the police on his doorstep. No matter where he turns, he is unable to get rid of the money.
Laurens Jan is afraid Lex wants to get rid of him. Bertus and Sjors are trying out East German listening devises and Laurens Jan overhears exactly the wrong things, worsening the situation.
Lex is defending Jaap Melkert against his lodger Caecilia but Laurens Jan falls for the accused. Bertus is planning a surprise for Sjaan with a certain Anja, which naturally makes Sjaan very suspicious.
Bertus is selling tap water labeled as mineral water. Luus is nervous about appearing on the television program "Klant is Koning" and has a rash. She blames Bertus' 'mineral water' when it gets worse.
Lex agrees to help a young gypsy woman get her boyfriend out of jail because Laurens Jan refuses. Soon, Lex is being forced to marry the girl by her gypsy papa.