People from all over The Netherlands get the unique opportunity to sell their precious showpieces to one of the four renowned experts. Seller Waltraud starts by selling a catalog that is signed by Picasso and Bart tries to sell an old coat of arms. Mathieu brings his loved chocolate machine, while Hugo surprises the experts with an carriage watch. Once an offer of an expert has been accepted or declined, there's no way back. Do the experts know how to negotiate smartly?

Sellers Luc visits the experts' house. Under his arm a painting mady by Toon Hermans. Hermans once gave the painting to his psychologist as an acknowledgement for his support during hard times. Now the painting is on Luc's wall, who wants to use the proceeds to buy a new artwork. Nienke also visits the experts of Van Onschatbare Waarde. She has a human skull for sale. The skull stems from the Asmat, a tribe from Papua New Guinea. In addition to the biological aspect, she also loves the cultural aspect. The fact that skulls are dug up and decorated in Papua New Guinea fascinates her. In this episode Fernande tries to sell a set of silver candle holders from the end of the 18th or start of the 19th century. Finally, Guus tries to sell his 18th century Buddha. As, according to tradition, one can't pass on a Buddha, Guus wants to donate the proceeds to a charity fund.

In 2009, short after the banking crisis, seller Frank bought a painting of Corneille at an auction. In that crisis, Frank lost lots of money and therefore decided to invest in artwork. According to Frank, the painting, dating from 2003, had no official title but usually is called 'Woman with leopard'. Rally driver Willem offers the experts a true Harley Davidson. Manufactured in 1924, it's quite an old one. Despite the age, it's still complete. This makes the Harley a truly unique object. Do the experts know to value this motorcycle with sidecar? Also in this episode: trader Gerwin took a gamble by buying a roulette tray online. And seller Ruud once got a pocket sundial by doing a job. But how much he earned with this job depends on the experts. It's no secret that expert Bert has a special interest in object with dials. But which expert tries to thwart him?

Seller Ruud visits the Van Onschatbare Waarde-mansion. He brings a bronze statue of Emile Louis Picault that was bought in Paris by his grand father in 1945. Ruud thinks the staute deserves a new owner and is hoping to get it to a new owner through the experts. Claudia brought the experts a true collectors item: two panels from the decor of the Italian movie Pinocchio from 2002. De panels do not fit her home, so Claudia is hoping that one of the experts can find them a good spot.

Father and son Vroom have a special painting on offer. The painting probably has been made by Jan Lievens, a Dutch Master who frequently collaborated with Rembrandt. There's just a small issue: the work isn't signed. Does one of the experts dare to buy the artwork? Fifteen years ago, collector René bought a set of ten screen prints of Marilyn Monroe, which were fabricated in the 90s. The set is brand new. René is hoping to sell the screen prints to one of the experts, so that he can renovate his house. Also in the episode: a silver horse from the end of the 19th century and a special medal.

Seller Marijn brought a work of one of the world's most famous artists: Salvador Dali. Marijn got the work - an etch - from her father when she was about 18. Ever since she had it at home. Marijn's father got the etch from Dali himself during a dinner with a mutual friend. Geke also visits the experts. She's hoping to sell a bronze bust from Fien de la Mar: the queen of Dutch cabaret. Seller Jaap cleaned his 'man cave' and has no space left for his lunarium. The lunarium is a model that demonstrates the rotation of the earth around the sun. What do the experts offer him?