Its the story before even Mordor was formed by Sauron in the movie THE LORD OF THE RINGS released in 2002.
The series revolves around how the rings were formed and how Sauron fooled the elves, drawves and men to forge the ONE RING ( the ring around which the whole story revolves in the lord of the ringa series 2002, 2003). I loving the story till now. I recommend it to all hobbits and one ring fans, this series is worth it.