A new case suddenly fell on Zhenya, a tireless home-grown detective, out of the blue. Or rather, first a certain Sveta, the illegitimate daughter of Nobel Prize laureate Lieberman, asked to spend the night at her house. She came from Tula with the intention of receiving her share of the inheritance of her recently deceased father. What nonsense, Zhenya thought, where would Nobel laureates come from in their town? However, the laureate turned out to be real, and he left a decent legacy. Before Zhenya had time to find out all this, she began to mow down the Lieberman family. Who exterminates the heirs of the venerable laureate? Zhenya intends to find out, and not even a bulldozer will stop her!