
Amazon accompanying its maps with lines from the "one ring to rule them all" poem suggested that the series might concern itself with the original forging of the Rings of Power. This is a roughly 3500-year period that begins with the Valar banishing Morgoth into the Void, and ends with Isildur and the Last Alliance of Elves and Men defeating Sauron.

Thanks to a series of maps that, starting in February 2019, Amazon began releasing on Twitter, we know that the series takes place during the Second Age of Middle-earth. But Amazon has teased a few details that allow some educated guesses.

Specifics about the storylines are currently being guarded by a giant spider in the deepest dungeons of Barad-dûr.
