Immersed in his research work, professor Reinhold Varavaara realizes that he has neglected his children's upbringing. He falls in love with his son Pelle's girlfriend Marja and becomes a laughing stock in the eyes of his family. The offended father sets out to discipline his ill-behaved children.

Uuno Laakso
as Reinhold Varavaara

Tyyne Haarla
as Elli Varavaara

Ansa Ikonen
as Marja

Oke Tuuri
as Galilo Varavaara

Laila Rihte
as Jaana Varavaara

Unto Salminen
as Pentti Varavaara

Siiri Angerkoski
as Liina

Aku Korhonen
as A.B. Huitu

Kunto Karapää
as Hubert (uncredited)

Nora Mäkinen
as Löpö (uncredited)