I think that's a teleplay of the actual Lord of the Rings novels?
If I understand correctly, the book Pemerton & Lev's Lev are asking about is
The Last Ring-bearer by Kiril Yeskov (which Benjamin Olson linked a wikipedia article) as a subversion of Tolkein's story, on the idea that "history is written by the winners." The book is supposed to be a sequel to LoTR, but told from the perspective of Mordorian survivors of the war. In it the elves are the bad guys, and the "orcs" (iirc a racist term used by the elves to refer to the people of Mordor) are struggling to excise magic from Middle Earth so that human industrialization can move civilization forward on their terms instead of as subjects of the decadent elves. Or something like that; I haven't read it 10ish years.
I'm not sure of the legal status of its English translation, so I won't link to it, but it's easy enough to find online.