Eisner teams up with a new partner to investigate a series of murders of young people.

Eisner and Fellner investigate when a naked man is found dead in a shopping cart.

Eisner and Fellner investigate a bus driver's murder.

After three bodies are found in a shipping container, Eisner and Fellner face off against the Chinese mafia.

A failed assassination attempt at a major international conference leads Eisner and Fellner into danger.

A nighttime emergency call from a moving car alerts the police in Carinthia: "Eisner, BKA Vienna, service number 318-12-58. Need support!" A short time later, Lieutenant Colonel Moritz Eisner is found seriously wounded by a shot to the head and motionless behind the wheel of his car in a quarry. When he wakes up in the intensive care unit, he has no idea what has happened. He suffers from "retrograde amnesia", which blocks out the traumatic experience itself. A fatal consequence of the gunshot wound.

Eisner and Fellner make a gruesome discovery in a demolished home.

A man falls from the top floor of a luxury hotel in Vienna. The Iranian diplomat and nuclear physicist Dr. Bansari apparently committed suicide. But why did he buy expensive opera tickets for the same evening? Moritz Eisner and his colleague Bibi Fellner want to investigate the matter, but the Iranian embassy and the Austrian Foreign Ministry immediately get involved.

The case is subject to the strictest secrecy - the dead man's laptop and cell phone are confiscated. The two investigators are annoyed, but do not give up. The hotel's surveillance video leads them to the trail of the shady lobbyist Johannes Leopold Trachtenfels-Lissé. He has arranged a secret deal with Dr. Bansari.

Eisner and Fellner find out that the case involves valves and pumps that are needed for nuclear reactors. A trainload of the high-quality components is to be sent to Iran via third countries. For the two investigators, a race against time begins - and against the Israeli secret service Mossad.

A Turkish businessman's murder puts Eisner and Fellner on the trail of a human trafficking ring.

Eisner and Fellner are caught in a PR nightmare when a kidnapper harnesses the power of social media to rail against the prevailing social system.

When the club owner Otto Hübner is found shot, Inspector Bibi Fellner has to drive to the crime scene without her partner. Moritz Eisner, who celebrated his 60th birthday the evening before, is sleeping off his intoxication. As soon as he gets back to work, Hübner's business partner shoots the inspector. The bullet only grazes Eisner, but he soon faces serious problems. Traces of the crime scene and other evidence make him a suspect!

Although Eisner remembers little after his film tear, Bibi believes his protestations of innocence. At a manufacturer of lifelike 3D masks, the two come across social media photos of Eisner that Claudia's new friend Lukas posted. Although police chief “Ernstl” Rauter believes in Eisner’s innocence, “the internal affairs department” does not hesitate to arrest his colleague. In order to find out who wants to frame the inspector for murder, Bibi not only has to find a killer, but also has to turn to previous cases.