A travelling circus experience bad times and starts to produce a miracle cure based on cake flour and sugar.

Count de Faber is working on a new type of explosive, but finds out that Professor Plussman has beat him to it. After an unsuccessful attempt to acquire the formula from Plussman, he breaks into the professor's house, steals the formula, and kidnaps his daughter, Mary. He takes her to Carlsten Fortress.

Fisherman Efraimsson is planning to make some easy money by starting a smuggeling business. Meanwhile his daughter Anna is being courted by local customs officer Lilja, and when Anna discovers her father’s plans, she decides to try to stop the awaiting tragedy.