Yövartija vain…
Pharmacy student Aina Zinckand doctor Yrjö Kallio are a young couple who are drawn into patterns of jealousy in their small Finnish town.
Aarne marries Martta because his mother tells him it is his duty as the eldest son to marry a wealthy girl. However, the attractive school teacher Ilona arrives in the village and causes complications when Aarne falls in love with her.