The well-intentioned and warm-hearted but clumsy ex-lawyer Fritjof Fomlesen (Lars Vik) miraculously saves a shipwrecked cat.
In the cat's collar is hidden a picture of a beautiful girl and a note: Help!
Unsuspecting, Fomlesen stumbles into Dobberby and comes into conflict with the genius inventor Rex Dobbermann (Sverre Anker Ousdal), who doggedly pursues wealth and power.
Fomlesen's surprise arrival gives Dobbermann, as well as his right and left hands Britt Bull (Mia Gundersen) and Sam Bernhard (Jonas Rønning), double work and headaches.
Against his will, Fomlesen becomes entangled in Dobbermann's insidious plans, and in the end he is the only one that can avert an imminent disaster in the idyllic town.