Private investigators Gløgg and Rask have been hired to trace a butcher (sausage-maker) who has disappeared. This leads the two into a number of adventures.
During the Finnish Civil War in 1918, guerrilla leader Karunka, the "White Devil", wreaks havoc on enemy forces until he is captured. With help from Eliina and the boy Jorma, Karunka and the Whites eventually turn the fight to their advantage.