In the late 19th century, two Swedish emigrants, Lasse Karlsson and his son Pelle, arrive on the Danish island of Bornholm hoping to find work on a farm and save enough money to travel to the United States of America.
The feeble-minded Sven's mother dies and he gets work as a farm-hand at the rich, affluent Höglund's farm. He has to work without pay and sleeps together with the cows. He meets the disabled Anna who is the first one to treat him as an adult. One day he has had enough of Höglund's maltreatment and moves in with Anna's family. Plot by Mattias Thuresson.
Sickan, the leader of the criminal Jönsson gang is incarcerated in a mental institution, attended by Dr M.A. Busé, who admire a handbook in crime that Sickan has been writing. Blackmailed by the nefarious banker Wall-Enberg, Dr Busé and Sickan's partners Vanheden and Dynamite-Harry execute Sickan's plan of stealing the valuable Black Diamond of the Romanovs from the National Museum.
