Liisa and the renowned composer Raimo Kaarna are fond of each other, but in Kaarna's family history, everyone does not accept the relationship. In addition, Liisa has her own doubts, and a secret that does not endure the daylight.
Jalmari, who does odd jobs at the harbor, rescues little Risto from being beaten up by older boys. The child is afraid of his violent foster parents and runs away to kind-hearted Jalmari. His foster mother Miina reports the escape to the Salvation Army, whose lieutenant Sirkka finds the boy in Jalmari's shabby cottage. Risto runs away again when they try to return him to his foster parents.
The local doctor Aarno works with his nurse wife Asta. After the death of their child, the spouses have distanced themselves from each other. The man is completely immersed in the work, his invention of medicine, and the treatment of the outbreak of an epidemic for which the wife no longer has interest in. She is jealous of her husband's close work relationship with nurse Taina.
