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.
Elina Salo
as Mattila - School teacher
Eino Krohn
as Mr. Sedano - professor
Ismo Kallio
as Mr. Lang - Sedano's assistant
Numidia Vaillant
as Sedano's secretary
Aulikki Tarnanen
as the girl of the raven house
Lauri-Juhani Ruuskanen
as interpreter
Kerttu Krohn
as the wife of the chairman of the municipal council
Leo Jokela
as dealer
Kari Rydman
as
