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.

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.

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 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.

Bax is betrayed by someone close to him who is himself involved in criminal activities. Valmira's dream of becoming a hip-hop star could come true. Smetterling awakens from his coma and is already in mortal danger again. And Juni makes a spectacular find.