The series details the investigative work done by the special commission of the
Leipzig police. The show's original team consisted of Hajo Trautzschke, Jan Maybach, Ina Zimmermann, and Miguel Alvarez. The commission mostly investigates serious crimes such as murder and manslaughter. After Alvarez is shot, Patrick Grimm replaces him, until he leaves Germany and goes to Africa, where his father died. His spot on the team is taken by detective inspector-candidate Vincent Becker, who lives with his superior, Hajo Trautzschke. Trautzscke has a daughter, Leni, a journalist who marries Jan Maybach during the series. They have a daughter, Charlotte. Maybach has a son named "Benni" with his first wife. A child at the beginning of the series, Benni later becomes an emergency physician. Leni and Jan later get divorced. Zimmermann gives birth to a son, Paul. She gets involved with several men during the series, including, in later seasons, with Maybach. After Becker moves to Costa Rica, Tom Kowalski joins the team for nearly ten years. He breaks the rules and creates conflict with Hajo and is subsequently demoted. Hajo eventually retires, returning from time to time in a private capacity, since he is the grandfather of Charlotte. Zimmermann becomes the team's new leader. Meanwhile, team assistant Olivia Fareedi becomes a permanent member, until she moves to Berlin. Kim Nowak, and later, after Kowalski leves, Moritz Brenner, join the team. Maybach nearly dies multiple times throughout the series, and he is fatally shot while investigating the man who killed Alvarez. The team is supported by
coroners Sabine Rossi and Mara Stein as well as laboratory assistant Lorenz Rettig and prosecutor Alexander Binz. In cases concerning sexual offenses, Dagmar Schnee is also on the team. ==Crossovers==