Practical semester at the Halle/Saale Police College: Finally out of the seminar rooms and into real life - which for the students means: real murder cases. With the support of their trainers in the homicide squad, they will have to solve this. The beginners sometimes overshoot the mark, make mistakes and have to learn new things on their way to becoming fully qualified detectives. In each episode, a case between the university and real life is dissected, discussed and solved, while the private complications of the students, lecturers and trainers are not neglected.

A missing child causes four families to help each other for answers. What they could not imagine is that this mystery would be connected to innumerable other secrets of the small town.