Yö vai päivä
A French cultural research group arrives in Finland. From Helsinki, the group travels to Saimaa to participate in Midsummer rituals, where the summer night celebrations overwhelm the researchers.
Mattila - School teacher
Mr. Sedano - professor
Mr. Lang - Sedano's assistant
Sedano's secretary
the girl of the raven house
interpreter
the wife of the chairman of the municipal council
dealer
