About the book: 2021 / Ten years have passed since the execution of Joan of Arc. At the University of Paris there is an interest in the study of natural sciences. Printing will begin soon. The plague epidemic in France periodically resumes... King Louis VII entered into an alliance with the Duke of Burgundy against the British. Reforms in the French army are yielding positive results. The Hundred Years' War with the British continues with varying success; but the British have one undeniable advantage... The northern part of France is captured by the enemy... A young man from the 21st century finds himself in Paris at the indicated time... He will have to survive in dangerous conditions and adventures, and achieve a high social position... The chronology and facts of those times are observed together with the author's fiction.