Ristikon varjossa.

Lauri and Anna are released from prison. They run into trouble when they cannot find work because of their past. Lauri obtains false identity papers, which enable him to get a job at a factory. A dangerous criminal named Asseri begins blackmailing Lauri, who is using the alias "Pentti Tahvana." Lauri's true identity is revealed in connection with the murder of Kaalep, the factory's night watchman.