Radio reporter Toivo Teräsvuori gets an idea for an experimental report using a hidden microphone, but he is reported as a madman talking to himself and is taken to the Houruniemi mental hospital. At the hospital, the volatile Toivo is considered insane, and even his wife Eila's testimony does not help the matter. Instead, Professor Piukka orders Toivo to undergo brain surgery.

Hannes Häyrinen
as Toivo Teräsvuori

Ritva Arvelo
as Eila Teräsvuori

Uljas Kandolin
as Salomon Tillikka

Kaarlo Halttunen
as Leo Laakso

Arvo Lehesmaa
as Piukka

Unto Salminen
as Dr. Kirves

Yrjö Ikonen
as Ranta

Heikki Savolainen
as Puputti

Oiva Sala
as

Sakari Puurunen
as Dr. Puukko