In Knohult things havn't changed much. Eulalia is tired of Nisse who's engaged in all sorts of inventions in his workshop or poaching in the forest rather than to repair the water pump. When Eulalia in protest begins swimming in soft drinks and water the plants with spirit Åsa-Nisse sees nothing else to do but to repair the pump. As with all his inventions he adds a few extra features ... When he starts the machine the ground rumbles and up comes oil instead of water! Now, not only Åsa-Nisse, but the whole Knohult sees their chance to become wealthy! But "Dunderpumpen", as he calles the invention, turns out to be stronger than anyone had imagined, and when shady Scanian oil magnates with support of the Swedish government wants their share of the pie Knohult declares themselves a republic...
Kjell Bergqvist
Michael Segerström
Ann Petrén
Sissela Kyle
Johan Rabaeus
Sofia Helin
Johan Glans
Maria Lundqvist
Henrik Dorsin
Claes Månsson
Allan Svensson
Robert Wetterlund
Stig Grybe
Peter Apelgren
Linus Eklund Adolphson
Fredrik Lexfors
David Batra
Per Andersson
Johan Wahlström
Henrik Hjelt
Ann Westin
Sven Melander
Brasse Brännström
Micke Spreitz
Robert Aschberg
Sandra Redlaff
Therese Olofsson
Lennart Noblewine