Marko and Bisera discover the unusual life of the murdered Šibenik police chief Mikulandra in Šibenik. They work with the new chief Ivor, whose best friend is the shady restaurateur Dugi, who was involved in the arrival and accommodation of the murdered Mexican woman Gabriela. Luca searches for the pathologist who performed the autopsy in Split, but also tries to solve his sister Tanja's problem with her abusive husband.

The political opponents of the Minister of the Interior use Roki's murder and Cvelet's kidnapping to attack Marko and his department. The new chief, Ivor, is aware that his professional involvement will endanger his friend Dugi. At Roki's funeral, Luca's sister's husband, Mario, also appears, who fits the profile of the perpetrator.