16 -year-old Mari has just been released from a juvenile detention school after one year of treatment. To prevent her from making contact with her old gang, she is sent to Skåne in southern Sweden, where she will work in a dairy shop. She doesn't like being there so she decides to run away and hitchhike her way up to Stockholm. She makes contact with her old gang but realizes that she's not welcome anymore and her boyfriend has even hooked up with a new girl.
A self centered author are having a word feud in a news paper column with a journalist called Sussie. The author has just divorced and now need a new house keeper. Sussie sees her chance to go undercover and takes the job with the intent to dig up some dirt. However, love intervenes.
Jan-Erik Widgren meets the lonely Bertha Olsson, a woman struggling with alcoholism. Though Bertha is already linked to Caligula, Jan-Erik's heartless teacher, she begins a relationship with the boy anyway. When Caligula learns that Jan-Erik is having an affair with Bertha, he begins to torture his student psychologically. He reserves his cruelest behavior for Bertha, however, which results in a tragic turn of events.
The old Victor Branzell has a grandson, Alf, who is in love with a clerk in a glove shop, Lilian Lind. But Lilian with her simple background doesn't get accepted in the circles where Alf belongs, and they have now reached the conclusion that they can't have a future together. Marriage is impossible. Victor summons Lilian and Alf and starts telling them his life story.
Latin teacher Birger Sjögren at Ringsala boarding school threatens his possesive and chronically ill mother that he will get married. She gets a stroke and dies. Sjögren is affected by feelings of guilt, envy and hatred towards the surroundings. A series of mysterious fires have taken place around the school the last few months. One of the students has seen Sjögren setting fire to a barn. But can he convince the trusted biology teacher Nordmark, expert of the criminal mind?