Shahrnaz and Arnawaz are the daughters of Jamshid one of the greatest king of Iran in folklore and in Shahnameh(book of the kings) Jamshid ruled Iran for seven hundred years. With the help of demons, he extracts iron and makes war weapons. He makes clothes for people and with the help of demons, he makes bricks and buildings. Jamshid had a big throne that flew in the sky with the help of demons. He celebrated Nurzo first time for his coronation day on the first day of spring. He became arrogant during his reign and was killed by Zahhak. Shahrnaz and Arnawaz use what they learned from their father during the Zahak period to liberate the people.