The film is dedicated to the philosopher, doctor, scientist of the East and poet Abu-Ali Ibn-Sin, who lived in Bukhara in the 10th century and was known in Europe under the name of Avicenna. Bukhara. Eighteen-year-old doctor Ibn Sina saves the emir from a fatal illness. Refusing gold and honors, the young man only asks for admission to the emir's book depository as a reward. The study of the works of ancient scientists, philosophers, doctors, observations of nature, numerous experiments increase the knowledge of Ibn Sipa. The treacherous attack on Bukhara by the troops of the ruler of Ghazna Mahmud, who devastated the city and set the world's greatest book depository on fire, forced Ibn-Sina to leave his homeland. After many years of wandering, he, together with his student and assistant Juzjani, comes to the capital of Khorezm, Gurganj, to declare war on the plague raging here...