WaPo Duisburg

Arda Turan, a former competitive swimmer, has just started her job with the Duisburg water police when the first body is found. Stefan Buhl lies dead at the edge of the harbor. What Carsten Heinrich from the criminal investigation department quickly identifies as a fatal accident at work raises doubts in Gerhard Jäger, who was transferred from the homicide division to the "WaPo" as a punishment. One look at the body tells him it was murder. But leave the investigation to the criminal investigation department? No way!

A driverless boat on the Rhine alerts the criminal investigation department – there are traces of blood on deck. But the supposed blood turns out to be red anti-rust paint, and so the case is handed over to the "WaPo" (water police). Jäger quickly realizes that something is wrong and sets out with his colleagues Arda Turan and Frank van Dijk to find the owner. However, Duisburg entrepreneur Niklas Brandt, who owns the boat, has disappeared and his wife is behaving rather strangely. The "WaPo" colleagues want to take a closer look. Surveillance confirms their suspicions: the man has been kidnapped.

The criminal investigation department is about to bust a drug ring and its shipment, while the "WaPo" is hunting a poacher who has so far managed to evade capture every time.

While inspecting a refrigerated container, Arda and Frank suddenly find themselves locked in! No wonder, because this is where the drugs are hidden. The two manage to send a message and their location, but their joy is short-lived because the container is being loaded! The situation is dire: how long can they survive in the cold? Hunter and secretary Lena set out to search for their colleagues. The poacher leads them on the right track.

A homeless man is found dead in the inner harbor. Carsten Heinrich from the criminal investigation department quickly dismisses the case as suicide and leaves it to the "WaPo" to identify the victim.

Marcel Bautz is already waiting impatiently at the police station: he is missing his best friend—who turns out to be the dead homeless man. Bautz is certain that Hacki, whom he only knows by this name, was murdered, and the injuries to the dead man's body also point to this. But who would have a motive? Is it the homeless man Watzke, who is said to have stolen Hacki's watch, or junkie Keule, with whom he had previously had a dispute?

Jeweler André Fischer is robbed. The police immediately block all roads to prevent the thieves from escaping.

But there is a security gap: the harbor. Thanks to Jäger's keen instincts, the colleagues from the "WaPo" give chase and are able to stop a suspicious ship. But it's not just the jewel thieves who are on board, but also Frank van Dijk's father! He is the captain of the ship.

Bar owner Helga, who keeps her colleagues from the "WaPo" happy behind the bar, is attacked and shot.

The attack on the landlady of their local pub causes consternation. The entire police force wants to solve the case as quickly as possible and bring the perpetrator to justice. To this end, even Jäger and his archrival Carsten Heinrich from the criminal investigation department form an alliance. All witness statements incriminate Tarik Alkan, who was the first to help Helga, but was the family man really the perpetrator?

What begins as a pleasant evening on the banks of the Rhine ends with an unexpected call-out for Inspector Arda Turan. The former competitive swimmer pulls a lifeless diver from the river. But was it really an accident? Jäger's suspicions are also aroused and the "WaPo" team begins its investigation. The dead man is Vincent Kraus, who ran a diving school on the Ruhr. His partner Sven Moeller quickly becomes the prime suspect, as he has repeatedly embezzled company money: did Vincent Kraus find out and have to die because of it? The dead man's wife also has a motive. Vincent wanted to leave her.

Expensive paintings are stolen from the Duisburg Art Gallery, and the "WaPo" is called in to investigate. But before Jäger can look into the robbery more closely, his past catches up with him.

He is picked up by the LKA (State Criminal Police Office)! There are new developments in the case that cost Jäger his job with the criminal investigation department: Jäger is suddenly considered the prime suspect.