In a world of kerosene lamps and class prejudices of the 19th century, a man appears endowed with knowledge from the future. The hero of this novel, a doctor from the capital of the Russian Empire, stands at the crossroads of eras, and his medical innovations not only fight diseases, but also challenge society’s conservative views. These innovations become a source of conflict, because they collide with people’s biases and fears. Will his methods be able to overcome the barrier of traditionalism? And at what cost will this change be achieved? Readers are immersed in the atmosphere of steam and kerosene lamp times, where the light of the future begins to transform the world.