In rural Essen-Schuir, Klaus Wollert is shot from a horse at close range while dressed in full Western attire. Mick and Andreas' investigations lead them to the “Ruhr River Ranch,” a Wild West club in the middle of the Ruhr region.

This time, Mick and Andreas have to solve the murder of Frank Terhoven, a young stripper. Their first lead takes the investigators to Rene, an older colleague and friend of Frank's. Rene had an argument with Frank during a performance the night before.

After the sausage-grilling contest at the “Südsee” campground, there is no winner, but one dead person: groundskeeper Harry is found murdered in his office—with the competition's winner's trophy, of all things.

A murder case leads Mick into the world of modern treasure hunting. Moritz Weber, founder of a geocaching club in Essen, is found dead in the woods next to his “treasure,” a small Tupperware container.

The body of Silke Hansen is found in a wooded area. She had been attending a weekend seminar run by couples coach Bernd Neumeister with her husband Erik and her 17-year-old son Rasmus.

The “Naked Refuelers of Huttrop” are a group of motorists who are protesting against constantly rising gasoline prices by refueling naked. The protest is well received by the public, but less so by the oil companies.

Velina, a “fortune teller and spiritual healer,” is dead. Mick and Andreas quickly identify a suspect. Heinz Schäfer's wife Bettina cannot have children and paid Velina 50,000 euros for aura healing.

Herbert Kupp is found dead in the church of the parish of St. Betram. During the investigation, Mick meets his old buddy Bodo Romanski again after almost 20 years and is quite astonished.

Tabloid journalist Ramona Landau is found beaten to death in the editorial office of the “Essener Abendkurier.” There are a number of suspects, but there is no trace of the murder weapon.

Organic farmer Jacob Hoffmann is found dead in the cutting mechanism of a combine harvester. The only witness is the victim's girlfriend, Silke Reiss. However, she claims to remember nothing.

When kindergarten teacher Felix suddenly falls dead off his bike on his way home from work, Mick and Andreas know that something is wrong. They are convinced that it is murder.

Lorenz Silber is seriously injured in a traffic accident. Investigators find a female corpse in the trunk of his car. Mick and Andreas are unable to determine the banker's identity.

Günther Kowalski is shot dead in his armchair at home. Investigators discover that Kowalski was apparently involved in the kidnapping of his former boss, Alfred Wannstedt.