Dangerous Lands

In the hands of the antique dealer Kirill Rovny, living in our time, an ancient document — the diary of knight Philippe de Lalen from the 15th century — ends up "for work." This marks the beginning of a series... of dizzying adventures, where there is room for horror, mysticism, and historical detective story.
The antique dealer studies the manuscript, while mysterious and sometimes outright frightening things happen in the city: his friend dies, headless corpses come to life, and the streets are filled with crowds of zombies. And it seems that Kirill has become the main target of the evil forces. Together with a small group of interested people, he decides to conduct his own investigation and embarks on a rather unusual and risky expedition.
Meanwhile, in the past, in the Burgundy town of Saint-Clair-sur-Oise, something is also amiss: news stops coming from there, and all couriers sent to the town disappear. Knight de Lalen, along with a small army, is sent into dangerous lands to find out what is going on.
The two plotlines will inevitably converge into one, to reveal the mystery of the vanished city.