Olaf Witte and Alice Drost disappear after a birthday party; Olaf returns to his father after 24 years; the people in the village start asking questions about that night many years ago.

A search is launched for Maud van Keulen, after her boat is found floating on the lake; people begin to wonder if there is a connection between her disappearance and the return of Olaf Witte.

Several residents of Schouwendam recount what they remember of the time when Olaf and Alice disappeared, but some of these stories contradict each other.

As memories come back to the unknown man, it seems that he is Olaf Witte after all; DNA testing again proves that it cannot be him.

A resident of Schouwendam refuses to donate DNA for a paternity test, which makes some people think he must be Olaf Witte's father; during Maud's funeral, Stijn does something unexpected, with far-reaching consequences.

Karlijn is under increasing pressure to solve the case and is confronted with her own past; new victims are revealed and the paranoia of the village takes dangerous forms.