Henrik Engström, Mattias Grosin
Alexej Manvelov, Anna Bjelkerud
A dark and rainy a night girl runs away from an orphanage. The girl seeks out our Detective duo Jerry and Maya and asks for their help. Her name is Clara and she is the daughter of the life convicted train robber Ferdinand Fransson.
Now she wants help to prove that her father is innocent. Lasse and Majas who just got their detective agency shut down by Kristinelund's prejudiced police chief see their chance. They must prove that children can solve mysteries and crimes!
But in order to succeed, they must reveal the person behind the mysterious cover ”Red Rose”, the real train robber, who has deceived everyone and threatens to strike again.