"Eternal Watch" is a fascinating book by the Russian writer Serhiy Lukyanenko, which is part of a series of books about magical ostriches in the city of Moscow. The main character, Anton Horodetskyi, is a magician who builds his career in the meadow. In this world, there is a system of Watchmen: Night, Day, and Twilight, who control humans and other magical creatures. But when the Black Man is born, threatening to upset the balance of power, Anton must make an important choice between his fate and the fate of the world. The book is characterized by a tense atmosphere, interesting characters and unexpected turns of events that keep you in suspense until the last page. "Eternal Watch" is an exciting fantasy that will leave a mark in the heart of every fan of magical adventures.