DETECTIVE AGENCY HENKKA & KIVIMUTKA
Something mysterious has taken place near the house number 42 on Pumpputie. On his way to school, Henkka finds something extraordinary and suspects that a crime has been committed. At school he tells his friend J. K. Kivimutka about his findings and at once they set out to investigate what has happened. As they are searching for evidence and interrogating the neighborhood, they notice that something else is going on – someone is stealing mailboxes! And so, the detectives have two different cases on their hands: trying to capture the criminals and bringing them to justice.