A new teacher - Marina - arrives in a small Pomak village in the late 1960s. She is a woman trying to live and think independently. Marina finds herself in a world unknown to her, at once pure and immaculate, but with the signs of the deformation of natural life that is typical of the whole country. After meeting the Doctor, Bai Mnogoznai, Mariana, the mayor, the internationalist Yosko, she discovers that each resists authority in their own way. And when the government starts changing the non-Bulgarian names of the Pomak villagers, the heroine realizes she is in a prison - with high mountains, forests, rivers - a prison of tragic beauty.

This naively filmed adventure story draws from Robert L. Stvenson's novel, but adapts it to its own devices. It tells the story of a young Czech who witnesses the deceitful actions of a ship owner. In fact, the villain is enriched by the plight of Bulgarian patriots fighting against Turkish rule on the eve of World War I.

The major force in this story is the children - the group of mischievous girls and boys who can play all the time. They find an antique amphora at the bottom of the sea. Since there is an amphora, there must be a frigate. There is a mystery cave in which the captain goes empty handed and comes out with full packs. That is how the search begins. The children and the adults are passionate about it. Instead of a frigate, they find a truth: "We do not need much to have fun."