Beginning of the 13th century. In the days of old existed a woman warrior named Shutohel, the Evil One, feared even by the Mongols, said to be the strongest army in history. At first, she was just a normal Tangut's soldier frightened by the mongol threat, but after coming close to death so many times, she found in herself a superhuman strength. On the other side, a young mongol prince, Yurul, is fascinated by the Tangut's, his enemies' writings, and is worried for the future....