The complicated relationships between a circus ringmaster, his estranged wife and his lover.
A woman is found murdered in a closed amusement park. A young couple who happen to be there at the same time become, without their knowledge, suspects for the murder. They are chased by a large number of police but only Martin Beck believes them to be innocent.
One Monday morning, a thousand children leave the suburb of Farsta and go to Stockholm to occupy the Royal Castle. The children have formed a group called S.O.P.O.R. as a protest against the way adults treat them and have destroyed their future. They demand that the robots in the industry are replaced by humans to create job opportunities. They take the royal family as hostages.
