Mirja finds her grandmother's old hat in the attic and sets off singing along the road with it on her head. On her journey, she meets composer couple Theodor and Thea Tekonen and gets a ride from hat maker Kosonen and his son Ilmari, who falls in love with Mirja. However, the girl continues her journey alone and, with the help of the circus troupe leader, gets to perform at Linnanmäki, where Ilmari finds her again.
Pirkko Mannola
as Mirja Halonen
Esko Salminen
as Ilmari Kosonen
Rauha Rentola
as Thea Tekonen
Siiri Angerkoski
as Mary Moulin 'Maija Moilanen'
Assi Nortia
as Donna Elvira
Hannes Häyrinen
as Theodor Tekonen
Pentti Viljanen
as David Moulin 'Taavetti Moilanen'
Pentti Irjala
as Kosonen
Leo Jokela
as
Uljas Kandolin
as
Liisa Nevalainen
as Mirja's Mother
Leo Lähteenmäki
as Tiilipää
