Åsa-Nisse has invented a very powerful engine and he sells the patent. However, the grocery store owner Sjökvist has been sneaking around ...
Åsa-Nisse has a bad back and when he visits the doctor he gets an experimental medicine for horses by mistake. Suddenly Åsa-Nisse has super strengths and becomes an unbeatable athlete.
Biffen and Bananen compete in a walking race between Stockholm and Gothenburg.
