Bruce takes care of the Tsar's telescope. He asks Petia to go to the Enchanted Lands to get some transparent stones. Margo and Kubik join Petia. Arriving in the Enchanted Lands, the children find themselves in a bottle where Djin has been for many years. Djin recognizes that the terrible vampire Poki-Roki ordered him to lure Bruce into the bottle and turn him into a cockroach. Petia's resourcefulness will get them out of there, but Petia is not the type to stop halfway. Petia goes in search of the famous stone and decides to find out why the vampire is looking for Bruce.
