Small-time criminal Niilo gets the chance of a lifetime when the wealthy Sahlbergs mistake him for their long-lost nephew. Taking on the role of Yrjö Sahlberg, Niilo becomes the manager of a safe factory, where his old partner in crime, Oksa, begins to blackmail him into shady dealings. After falling in love with his "cousin" Annikki, Niilo wants to face his past and start a new life as an honest man.
| Actor | Role |
|---|---|
 Ansa IkonenAnnikki Aho | Annikki Aho |
 Unto SalminenNiilo Nurmi | Niilo Nurmi |
 Aku KorhonenKalle Karlsson | Kalle Karlsson |
 Siiri AngerkoskiTekla | Tekla |
| AAnni HämäläinenMrs. Sahlberg | Mrs. Sahlberg |
 Ossi ElsteläEinari Oksa | Einari Oksa |
 Hugo HytönenKoskinen | Koskinen |
 Verna PiponiusJulia Modin | Julia Modin |
 Yrjö TuominenKapperi | Kapperi |
 Eero ElorantaPenttinen | Penttinen |
| TTheodor WeissmanKotivalo Svalling | Kotivalo Svalling |
 Arvi TuomiNot listed | Not listed |
| EEero LeväluomaSalminen | Salminen |
 Mervi JärventausLaurinen | Laurinen |
 Ossi KorhonenSolanko (uncredited) | Solanko (uncredited) |
 Anton SoiniAndersson (uncredited) | Andersson (uncredited) |
| LLauri KyöstiläMiekanheimo (uncredited) | Miekanheimo (uncredited) |
| SSaima KorhonenKanerva (uncredited) | Kanerva (uncredited) |
| EEvald Terho(uncredited) | (uncredited) |
| HHilly Lindqvist(uncredited) | (uncredited) |
| NNestori Lampi(uncredited) | (uncredited) |
| LLauri Korpela(uncredited) | (uncredited) |
| LLennart Vaikonpää(uncredited) | (uncredited) |
 Aku Käyhkö(uncredited) | (uncredited) |
| OOrvokki Lahtinen(uncredited) | (uncredited) |