Greenver, the head of a noble family in the republic of Morigata—an important figure in the republic’s politics—dies unexpectedly. But it turns out that before his death he managed to hide all his wealth, and the heirs face ruin and the loss of status.
In a desperate attempt to find the hidden treasure, they file an application with the Council of Magi for a Summoning ritual, which, in their opinion, will help locate the family’s money. However, instead of indicating where the treasure is hidden, the Summoning spell pulls from beyond the world the soul of a strange girl—Natalya Astakhova. The mage who performs the ritual is certain there has been no mistake, and that if a living person has appeared for the first time in several hundred years, it is precisely she who is the key to finding the inheritance. That means Natalya must solve the mystery of old Greenver. In exchange for her help, they promise to return her… But it turns out that this is impossible. Meanwhile, her pursuers’ fame runs ahead of the daughter of a senior officer in the criminal investigation, so she has to track down the murderer of an ambassador from the powerful Arvian Empire, solve the case of a maniac who kills young girls on the Torey island, and deal with several other difficult tasks despite the deadly danger to herself…