This time, the Graz detective Sandra Mohr and her supervisor Sascha Bergmann have to go to the remote Mürztal to solve a bizarre death with the jovial local police officer Ferdinand Franz: The entrepreneur Walter Fürst is dead in his own bed – with strangulation marks on his neck.

Mathias is transgender. Although he is more than sure about his decision to live as a man, he still has to find his way in his new identity and especially in his new job. And also his relationship with his girlfriend seems to have changed due to the transition.