The Non-Canon Expert goes way back into the history of Darth Plagueis and Darth Sidious roughly more than 35 years before the rise of the Empire, looking at the first time that Sidious referred to his Master as «wise,» giving him the title of Plagueis the Wise. This is a Legends story for Darth Plagueis and Darth Sidious with information found within the excellent Legends novel «Star Wars: Darth Plagueis» by James Luceno.
