In the frontier village Vetrov boys from the children's home called Indians lead a bitter "war" with the local Símáks. Before a battle the Indians have a meeting in the sandpit with a smoke signaling. The smoke brings to the sandpit a frontier guard Tomás with a police dog Ranek. The children learn from Tomás that Rank served out and that it shall be destroyed. The nine-year old Fanda writes a letter to the "minister of the frontier guards" in which he asks to let Ranek live. To save Ranek's life he also visits the local frontier guard commander. In the end it is decided that children from the children's home may keep Ranek.
Jiří Strnad
Michael Dymek
Josef Somr
Jana Tomečková
Ivan Mistrík
Ilja Prachař
Petr Voříšek
Helga Čočková
Miroslav Horák
Blažena Holišová
Vladimír Dlouhý
Oldřich Velen
Magdalena Reifová
Miriam Chytilová
Igor Zapletal
Michal Nevěčný
Karel Kabíček
Miriam Vránová
Věra Nováková
Monika Gondolánová
Michal Kocourek
Stanislav Tříska
Kateřina Thořová
Jana Šedová
Roman Pravec
Petr Klepáček
Juraj Matula
Kateřina Besserová
Peter Gál
Eva Strupplová
D. Grundzová
T. Gál
Robert Demeter