The fourth historical novel from the series “The Fate of the Bryansk Principality” tells about events from the history of Medieval Rus' related to the life and activities of Prince Roman Mikhailovich the Young (1330–1401), his administration of the Bryansk Principality (1357–1363), and his service to the great Moscow princes (1363–1392) and the Grand Duke of Lithuania Vytautas (1392–1401). The Principality of Bryansk at this time fell into decline and with the death of Roman the Young ceased to exist, becoming part of the Grand Duchy of Lithuania as a remote border province. In a new way, through the prism of facts, historical documents and research by historical scientists, the author describes the most important battles, including the Shishevsky forest (1365), which brought the first victory to Russian soldiers over a large Tatar army, deliberately “forgotten” by apologists of the Moscow princes, not those who wanted to glorify the winner - the Grand Duke of Ryazan Oleg Ivanovich. The author abandoned the traditional praise of the course of the great Moscow princes and examines events taking into account universal human values.