https://mattkprovideo.com/2020/02/01/star-wars-underworld/

“Star Wars: Underworld” test footage + Making Of

https://starwars.fandom.com/wiki/Star_Wars:_Underworld

https://www.aintitcool.com/star-wars-underworld-test-footage-82741/

https://www.imdb.com/title/tt0458291/?ref_=fn_al_tt_1

Reportedly a live-action series that takes place between the events of ‘Star Wars: Revenge of the Sith’ and ‘Star Wars: A New Hope’.