The main focus of "Son of Vishtaspa" is on the work of an English general named "Sir Henry Rawlinson," who was interested in Cuneiform inscriptions and was able to read the Bisotun inscriptions with great difficulty, which become the basis for further studies.
In another part of this documentary, Professor Wouter Henkelman, one of the most prominent archaeologists in the world in the field of inscriptions, especially Elamite inscriptions, has described his efforts in discovering the secrets of Bisotun Cuneiform inscriptions. He believes that in the past 100 years, some passages of this inscriptions either have remained unread or have been misread. So, an archaeologist team under the direction of Professor Henkelman, started to re-read the inscription from a year ago by light scanning. This new experience has been carried out in the Bisotun site. Due to the fact that the accuracy of the light scanning is up to a tenth of a millimeter, Professor Henkelman managed to read a few passages of the Bisotun inscription, previously remained unreadable due to sediments.
The Bisotun inscription is written with Cuneiform inscription and in three languages of Ancient Persian, Babylonia and Elamite, and has been registered as Ira
historical monument in the UNESCO World Heritage List. In this inscription, the Achaemenid has introduced the Achaemenid dynasty, how Achaemenids regained the kingdom, how he ruled, the death of Cambyses, the rebellion of Gaumata and his death in 522 BC, the revolts in many territories and the repression of them and the regaining of many areas that refused to obey him.
"Son of Vishtaspa", that its production began in 2014, is a product of the Iran Documentary & Experimental Film Center.