A war between mafia clans appears to have broken out in Bologna. Around the same time, Nikita, a young woman working as a delivery driver, finds €250,000 in cash in a package. Frightened, the young woman goes to the police station where she meets Inspector Coliandro, who begins investigating.

A young black girl is killed during what appears to be a voodoo ritual. Coliandro is assigned to care for the victim's sister, who has arrived in Bologna from Africa.

A suspect dies during a police operation in the tough Pilastro neighborhood, apparently killed by a gunshot fired from Inspector Trombetti's weapon. Coliandro investigates to try to exonerate his colleague.

On the estate of a very wealthy man, an escort is cruelly murdered by a cold and determined hitman. The investigation leads Coliandro into the world of high-class prostitution.

Coliandro has to pose as a taxi driver for a trivial public safety operation, but a beautiful "crazy" woman climbs aboard and the situation changes radically.

While Trombetti was taking his niece Angelica home, accompanied by Coliandro, his car was rammed by a scooter driven by a Chinese boy who immediately disappeared into thin air.

In the trial against the Casalesi clan boss, the Bologna prosecutor's office must rely on the testimony of Jelena, who is now under protection. Coliandro, still in love with the woman, learns of her new cover and decides to visit her. There, however, he must contend with two seasoned killers.

During a nighttime chase through the streets of Bologna, a young woman steals Coliandro's gun. While trying to track down the unknown woman, the inspector stumbles upon a dangerous criminal organization.

Two gypsy girls steal something very important from the home of the wrong person, a corrupt Carabinieri marshal, who attempts to take revenge by ambushing them. One of the girls seeks refuge in Coliandro's house, seeking help.

Investigating the death of his cleaning lady's nephew, Coliandro uncovers an extreme fighting ring involving a series of wrestlers who are systematically drugged to relieve pain and fatigue. Helping him unravel the case is Veena, a beautiful and athletic fighter who escaped from this group of modern-day gladiators.

A young Muslim girl shows up at Coliandro's office to report her father's sudden and mysterious disappearance. Reluctantly, the inspector nevertheless decides to investigate the matter around town.

Coliandro is caught up in a bank robbery in downtown Bologna. The three young and inexperienced robbers are quickly subdued by three hostages, who, in turn, take the others hostage.

Officer Gargiulo shows up at Coliandro's house in the middle of the night, drunk and with a bloody knife in his hand: the inspector tries to reconstruct what happened, but it doesn't seem easy.

Coliandro meets Thea, an ironic and provocative investigative reporter who, together with "Cinno", a young hacker, is investigating the affairs of Roman Kolas, an Uzbek entrepreneur who, under the guise of philanthropy, conducts very shady business.

As punishment, Coliandro has been transferred again, this time to the tedious canine unit. His sister comes to visit him, deeply concerned about her daughter Angelica, who is dating a boy associated with a satanic cult.

After shooting two teenagers, Coliandro is forced to see a beautiful psychologist at the Ministry, who is dedicated to helping those officers most likely to use firearms.

Coliandro, together with Jamila, a brilliant young French intelligence agent, investigates Tarantola, a seemingly perfect policeman who, through the fixer "Don Lurio", is the terminal of a gang of corrupt agents.

The husband of a former professor from Coliandro is murdered inside the University of Bologna. The woman is accused of the murder because of her husband's constant escapades: could this really be true?

Coliandro believes Gamberini has relapsed into his old gambling habit and, trying to help his friend, infiltrates an underground gambling ring. However, in doing so, he undermines an ongoing investigation initiated by Longhi and puts Giacomino, whom he has hired as a consultant, Gamberini, and himself in grave danger. Thanks to the help of Ambra, the girlfriend of one of the gangsters, the inspector manages to escape.

Chief Inspector Vittoria Martello asks Coliandro to join the "Team", a team of superpolicemen who are opposed by Gamberini and other colleagues for their brutal and unorthodox ways. And in fact, thanks to Coliandro's entry into the Team, it turns out that the group is nothing more than a new gang of drug dealers and exploiters inspired by the action of the Banda della Uno Bianca.

While maintaining order at the city stadium, Coliandro and Officer Balboni arrest a football fan who had tried to stab a policeman. Terrified by the thought of ending up in prison, the boy cooperates and provides the police with some important information.

Coliandro witnesses an illegal motorcycle race between two riders, but one of them loses control and causes the other to crash, killing him. The inspector and Buffarini manage to save the motorcyclist responsible for the accident and find refuge in the Carabinieri station, but they must contend with the bloodthirsty local boss, the deceased rider's brother, who seeks revenge.

Coliandro is forced to be Paffoni's dance partner for an evening. To escape this unpleasant task, he finds himself investigating the murder of a young singer. He's helped not only by Paffoni, a skilled dancer, but also by Natascia, the young and beautiful new singer in the liscio orchestra led by the shady Vasinto and his wife Ersilia, known as "Vagona."

Natasha, a beautiful international assassin, arrives in Bologna pursued by secret services from around the world. Coliandro must defend her from them... and himself from her.

Coliandro is contacted by a girl who needs help: her boyfriend disappeared after stealing a smartphone and finding footage of a gang of Russian criminals inside. The young woman turns to the inspector because she often hears him mentioned by her aunt, the deputy prosecutor Longhi, who however believes that Coliandro is not a good policeman.