Published:
Etsivätoimisto Henkka & Kivimutka
On his way to school, Henkka Virtanen finds evidence of a possible crime. His friend J.K. Together with Kivimutka, the boys decide to find out what happened, because these criminal matters are part of the tasks of the detective agency founded by the boys. When it turns out that mailboxes in the area have disappeared during the night, the detective agency already has two crimes to solve. A fun and exciting adventure begin, where the boys also have to face their fears. (Source: Future Film)