Amateur dirt-bikers Rien and Hans–and their mechanic Eef–each fall in love with Fientje, a young woman who, with her brother Jaap, works a concession stand at the races. Everyone seeks a better life: Fientje wants out of the business and away from Jaap; and Rien and Hans aim to make their marks as pro racers, like their hero, Gerrit Witkamp.

De Cock and Vledder investigate the robbery of an armored truck which leads to several murders.

Dora Leenders is about to give birth. Since she was impregnated during a school reunion, she invites both men whom she had sex with that night to her flat to witness the birth.

Vagabond Bob finds a suitcase belonging to stockbroker Peter and returns it to his hotel. There he meets Marion, who happens to be Peter's mistress. Unfortunately in doing so he loses his only possession of value: a lottery ticket.

Artist Hans Drost and his children have a spectacular hobby: rockets.

One day, as Senior wanders aimlessly through the city, his attention is drawn to demolition workers tearing down an old building. Among the rubble, Senior discovers an old model ship. He takes it home and begins studying old ship logs and nautical charts. Thomas also shows interest, and before he knows it, he finds himself embarking on a new adventure with his friends and Senior.

After a colleague is murdered, insurance worker Kafka gets embroiled in an underground group who are attempting to thwart a secret organization that controls the major events in society.

A rich Frisian farmer has been murdered in Amsterdam and police duo Grijpstra & De Gier are sent to investigate. Adjutant Grijpstra has problems at home again and is happy to leave for Friesland to investigate the murder. Sgt. De Gier finds the Frisian Hylke much more interesting than the murder case. In Leeuwarden there is a real Chinese war and a brutal robbery at the cattle market. Suddenly there is that friendly rattling, asthmatic rat who provides an unexpected solution.