Thor (Chris Hemsworth) is held prisoner in a remote world and must fight as a gladiator for the entertainment of the population. Along the way, he meets an old friend. Together they must try to leave Sakaar to return to Asgard and stop power-hungry Hela (Cate Blanchett), Thor's sister. This wants to initiate Ragnarok, the destruction of the planet.
The sister duo is called to a serious hit-and-run accident. On site, they are horrified to discover that they know one of the victims. The car's passenger, Fred Braun, is dead. Also at the scene of the accident is the body of Serge Vogler, a criminal car dealer who was thrown from the car. Only Mia Savchenko (Valerie Stoll), Fred's girlfriend, survived. Everything initially points to a hit-and-run, but on closer inspection the circumstances of the find are suspicious.
In the midst of a rural idyll, shots suddenly ring out and a young mother dies. Her husband, the doctor André Collmann (David Rott), cannot explain the attack. Inspector Mohn (Christina Hecke) and her colleague Breyer (Robin Sondermann) face an attack, the background to which is initially unclear. Shortly thereafter, Robert Haffner (Tristan Seith), a friend of Collmann's, is kidnapped and a video of the perpetrator is received by the police. He demands the reopening of the case of Nadine Abeck (Judith Neumann): "72 hours for the truth, otherwise I'll take the law into my own hands."
Ingolf Roscher is found brutally murdered at Lake Störmthal. Maja Jacobi (Sophie Lutz), who dialed the emergency number, was targeted. She can't remember anything. Ingolf Roscher was Leipzig's city councilor and known for his choleric outbursts of anger. His new wife Sofie (Elisabeth Baulitz) and her stepson Matteo (Fabian Hanis) can also report on this. Was Ingolf's murder a liberation from difficult family circumstances?