The heroes of the film are the pupils of the children's public organization "Sincerity", which has existed in Mariupol since 2004. Its creator Valeriy Onatsky himself went through a difficult school of life - growing up in a dysfunctional family, starting with hard work at a blast furnace, he was able to stand firm, remain human and give a piece of his warmth to children who found themselves in a difficult life situation. The moment of truth came in 2022, when Mariupol found itself in a war zone. Valery and his assistants saved about 120 children.