The horse Karino is born during winter and when his mother dies, a young woman starts to care for the helpless foal. Their adventures together are followed during the years to come, from the age of a newborn to the time when Karino's a full-grown competition horse.

Claudia Rieschel
Grażyna Barska

Janina Borońska
Grażyna Barska (voice)

Tadeusz Schmidt
Klimczak

Karol Strasburger
Andrzej Stolarczek

Zdzisław Maklakiewicz
Małecki
Stefan Czyżewski
Dr. Frankowski

Janusz Gajos
Janczar

Władysław Hańcza
Equestrian club president

Leon Niemczyk
Jabłecki
Stanisław Niwiński
Rusin
Zygmunt Kęstowicz
Malinowski

Zdzisław Kuźniar
Equerry
Kazimierz Wichniarz
Horse breeding department director

Juliusz Lubicz-Lisowski
Horse racing gambler

Jerzy Moes
Gambler (uncredited)