Ancient Russia. XIII. The villain seized the power in the Murom principality. Only brave warrior Prince Peter goes to the defense of the principality and battle with the villain. In the battle the poisonous blood of a sorcerer poison Prince Peter. Healer Fevronia uses her talent and saves Peter. Between Peter and Fevronia flashes real pure love, which they preserve in spite of many obstacles that arise from the rescue of the Murom principality from the villain.