The program is a prequel to the other works in the franchise, taking place in 1939, some decades before the events of the 1994 Stargate film and its subsequent sequel series.

[citation needed] The series was announced on July 20, 2017 at the 2017 San Diego Comic-Con as part of Stargate SG-1's 20th anniversary celebration.

Catherine overpowers her guard and seeks the help of her friends Captain James Beal and Wasif, an Egyptian serving in the British army, convincing them to go through the gate with her to rescue her father.

Aset alienates the local tribesmen, her faithful servants and demands one of them fight Brücke's soldier, Stefan to death to "prove their worth".

Captain Beal activates the Stargate and sends both Professor Langford and Catherine back home, but is killed by Serqet.

Back on Earth and having no memory of their adventures since before the Nazis arrived, Langford and Catherine wrap up their investigation of the Stargate as the US takes possession of it.

The series would feature the Catherine Langford character and would be produced by MGM's Digital Group and New Form, who would also handle development and production.