The planned marriage between Premierpiet and Probleempiet is in jeopardy, scholars Hans and Frans Steenstra have been kidnapped, and a rare ruby has been stolen from the Rijksmuseum. The dangerous Dr. Brein is behind all of this. Sinterklaas must intervene and even sends his Pieten on a trip to Switzerland to prevent Dr. Brein's criminal organization from gaining power.
Jos Brink
as Museum Directeur
Ricardo de Groot
as Donnie Bianco
Richard de Ruijter
as Boris
Bart Ettekoven
as Sluwe Ruudje
Sander Faas
as Hans Steenstra
Hetty Heyting
as Tante Til
Liane Houdijk
as Pittige Pia
Patrick Kerklaan
as Patserpiet 1
Hans Klok
as Bisschop van Zwitserland
Kenneth MacCay
as Principe Piet
Ingeborg Mast
as Probleempiet
Bea Meulman
as Marja, Assistent museumdirecteur
