The work and life of Finnish police officer Artturi Sakari Reinikainen.
Bachelors Pekka Puupää and Pätkä are going to a dance. There they meet Justiina Pönttö. Pekka and Justiina hit it off and get married as soon as possible.
Pipsa has fallen prey to a shady scientist Kalevi. Pekko tries to save her.
