Onneli and Anneli get a task from their neighbors Tingelstina and Tangelstina: aunts send the girls to take care of their distracted inventor brother Vekotiitus. Onneli and Anneli get to know the miraculous inventions of the Vekotiitus farm and have a great adventure when the space is threatened with demolition. Onneli and Anneli use the invention of Vekotiitus to save the family farm, but the rescue operation requires the familiar help of Ruusukuja and even a visit to the dream world.