The main hero of the narrative is Bohdan Khmelnytsky. The book is devoted to the last 10 years (1647–1657) of the life of the legendary hetman of the Zaporozhian Army, commander, statesman, and diplomat Zynoviy Bohdan Mykhailovych Khmelnytsky (1578–1657). The author portrays the events that led to the great historical act of the reunification of Ukraine with Russia. Tragic times, contrasting characters of the main figures are recreated with the confident hand of a well-known writer, a connoisseur of the 17th century.