Unit 13 is a special investigation team, which has investigates big crime organizations, which sometimes involves unorthodox ways of working. Unit 13 is working to bring down the syndicate called Scylla. The team of head inspector Ruard Talsma and district attorney Adrienne Rieding is confronted with the syndicate that seems to know about their every move upfront.
The show is based on the IRT-affair which took place in the Netherlands in the early 90ties.
Adrienne Rieding returns from the US, among other things because she wants to experience the resolution of the matter. Van Dalen wants to testify, but by is brought to Koops by bribed keepers, whereupon he assassinates him. The infrastructure plans which the Unit has got hold of by means of the computer of Karin, indicate a criminal network that has already infiltrated the Dutch polics and economy. It does not appear to be possible to find the big man behind the whole organization, because Prinsen, the last hope of the Unit, is assassinated aswell. Eventually the complete story will be printed in a newspaper Article, which was the only wish of Karin.