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1649. A new voivode, Adam Kysil, arrives at the Kyiv Castle on Shchekavytska Hill. He is accompanied by his assistant, translator Jan Looz. He is a clever fellow. Kisel's task is to negotiate with the rebellious Cossacks of Khmelnytsky. Meanwhile, strange things are happening in the Lower Town, Podil. People's young children disappear. Residents complain to the authorities, that is, to the voivode. They suspect that Gypsies are stealing, or that children are being kidnapped by local bandits who trade in the local forests and operate on the major roads. The children are allegedly sold into slavery to the Turks.

Yan Looz takes on this case. But first of all, he has to find out who killed the castle steward Piasota. He was supposed to meet the voivode Kisiel, but he never did, which upset the royal official. Castle manager Piassota was killed at the very moment Adam Kisiel entered the castle.