Unemployed Anna leaves her son Olavi to be raised by Antti, a shoemaker. When the shoemaker dies, Olavi is sent to an orphanage, from which he runs away with a cat and a violin under his arm. After many misfortunes, the talented Olavi becomes a student of a professor at a music academy and travels to London to compete in an international violin competition.
| Actor | Role |
|---|---|
 Heimo HaittoOlavi | Olavi |
 Aku KorhonenNot listed | Not listed |
 Regina LinnanheimoAnna | Anna |
 Irja ElsteläHelka | Helka |
 Ossi ElsteläNot listed | Not listed |
 Jalmari RinneAntti Suominen | Antti Suominen |
| AAnni HämäläinenKaisa | Kaisa |
| LLasse LagusKalle | Kalle |
| VVarma LahtinenNot listed | Not listed |
| RRosi RinneNot listed | Not listed |
 Aku KäyhköNot listed | Not listed |
| JJaakko FurmanRisto (uncredited) | Risto (uncredited) |
| HHelinä SirkiäHelinä (uncredited) | Helinä (uncredited) |
| JJouko IlvonenKauko (uncredited) | Kauko (uncredited) |
 Uuno Montonen(uncredited) | (uncredited) |
| MMartti Similä(uncredited) | (uncredited) |
 Artturi Laakso(uncredited) | (uncredited) |
| AArja Niska(uncredited) | (uncredited) |
| BBoris Sirpo(uncredited) | (uncredited) |
| PPirkko Mäkinen(uncredited) | (uncredited) |