On the way to the holiday camp, 16-year-old Steffi falls in love with Norbert, whom she has known for a long time from visiting grandfather in Pinnow. She made a quick decision to change her future plans and decided to become a milker, because Norbert is the newly appointed apprentice trainer for livestock farming in Pinnow. The grandfather, who is very happy about Steffi's visit, cannot prevent his granddaughter from making up her mind.
Norbert himself was an apprentice in Pinnow and often suffered from the teaching methods of his predecessor. That's why he wants to do it differently.
In Dublin, the acid-scarred, razor-slashed corpse of a young woman is discovered in the boot of the Swiss Ambassador's limousine. The Ambassador, his family and employees all become immediate suspects. Faced with the problem of diplomatic immunity, the police officer in charge of the case brings in John Norton, an ex-Inspector known for his brutal methods, to carry out an "unoffical" investigation. While Norton develops a relationship with the Ambassdor's attractive daughter, several more gruesome murders occur...
