Karel Kabíček

For nine-year-old Saša, the end of the Second World War is an adventure in which he and young neighbour friend Mařenka compete over who will spot the first Soviet soldier. But the boy causes problems when he lets two German snipers enter a house in which many families are seeking shelter. Fortunately, the inquisitive Saša also comes to the aid of Soviet soldier Váňa, whom one of the neighbours is accusing of stealing a pearl necklace.

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.

A mischievous grandfather likes to play spies with his friends, thereby complicating the family well-being of his daughter-in-law and the love life of his granddaughter Tereza.