In an abandoned power plant, Bax and Pirmin find themselves fighting to save the world from impending doom. However, their mission becomes complicated when they must also free Nadira from the clutches of a relentless bounty hunter.

Valmira lures the mafiosi into an ambush with fatal consequences, while to get to the bottom of a double murder the cops infiltrate the heart of the Swiss secret services. Despite constantly having two Romande policemen on his tail, Pirmin's son will prove fundamental in solving the case.

Bax is seriously injured during a fight: will he be able to reach the hospital in time? Meanwhile, the babysitter Nadira is in grave danger, while Valmira seems willing to do anything to get a collaboration with a rap star.

Bax is suspected of murder, but during a prisoner transport he manages to escape together with Juni. The two thus end up in an uninhabited region, finding themselves without water and without escape. For his part, Pirmin instead has to get rid of a corpse, while Valmira realizes that she has been deceived.

Cornered, Regina finally confesses that she is on a secret mission for the government. Meanwhile, the bumbling Bax makes another mess of his own, sparking a full-blown international crisis.

Bax and Pirmin discover that Regina is leading a double life, also uncovering other clues that reopen an old case. Nadira is instead hunted by a ruthless assassin, while Valmira finally realizes her dream, but at a very high price.

The Tschugger Bax Schmidhalter from the Valais wants to hunt down local drug dealers. To do so, he sends the shy trainee Smetterling on a daring undercover operation. It goes wrong.

The police believe that Pirmin murdered his father-in-law. Gerda, the actual perpetrator, wants to get the explosive key from Bax - no matter what the cost. Bax is handcuffed and cannot defend himself and Valmira is in mortal danger.

Bax is looking for the killer because he has already made a witness disappear. In addition, the Tschugger wants to convict the crook couple Juni and Valmira in a spectacular interrogation. And Fedpol officer Annette now knows what happened in the Pfynwald. This means the end of Bax's career.

A bloodbath on the Simplon Pass prompts a large-scale police operation in the Valais. The Tschugger Bax, who is forced to do cleaning work, secretly goes on the hunt for criminals and hits on federal police officer Annette. Killer Mirko searches for a mysterious tomato sauce. No one can stop him.

Bax and Smetterling find the decisive clue to the plans of the sect. Apparently, the cult wants to blow up the Grande-Dixence dam and flood the entire Valais region. Valmira doesn't let her kidnappers get her down and Biffiger's curiosity puts him in mortal danger.

A confrontation on the Simplon escalates and shots are fired. Possible victim: the trainee Smetterling, who has disappeared without a trace. Bax makes his mark with a primary school class. Instead of teaching road behaviour, he tells cool cop stories. Fun could turn into bloody seriousness.