An excursion boat on Lake Constance. Good-humored passengers celebrate at a costume party. In the middle of it all is Elena Barin on the day before she takes up her post as head of department at the Constance criminal investigation department. She is traveling as a tourist - until the moment she notices a weapon on a passenger.

Over 40 years ago, Josefa left her home village in a dispute. A lot has happened in the meantime. Now she returns as a mature woman to where she is still known as a man.

A man and his ship are sunk in Lake Constance and the dead man's son is missing. For the detectives, he is the prime suspect. Until an anonymous tip-off about a prisoner hidden in a box turns up...

Yascha Krüger is a shy forestry official who struggles with dating and tends to scare people off. While temporarily working in a forest district, he meets Mats, a photographer, and the two develop a romantic connection. At the same time, Yascha is assigned a professional task: to persuade the heirs of a recently deceased landowner to sell a private forest so it can be turned into a national park. As Yascha becomes more involved in both his work and his growing feelings for Mats, he finds himself telling lies that complicate his relationships and force him to confront what he truly wants—both personally and professionally.