The series hinges on major narrative revelations across its seasons:
- Halbrand is Sauron: The stranded mortal warrior whom Galadriel rescues and champions as the rightful King of the Southlands is revealed in Season 1, Episode 8 ("Alloyed") to be the Dark Lord Sauron. Galadriel’s own crusade inadvertently guided Sauron directly into Celebrimbor’s forge.
- The Creation of Mordor: The Southlands are obliterated when Adar triggers an underground mechanism using a Morgoth-forged sword-key, funneling water into Mount Doom's magma chamber to cause a volcanic cataclysm that covers the sky in ash and births Mordor.
- The Identity of the Stranger: The amnesiac meteor traveler who journeys with the Harfoots is confirmed in the Season 2 finale to be Gandalf the Grey, finding his staff and purpose in Rhûn.
- Annatar and the Fall of Eregion: Sauron returns in angelic guise as Annatar, gaslighting Celebrimbor with shared visions while secretly crafting the Rings of Power for Dwarves and Men. By the time Celebrimbor awakens from the illusion, Eregion is besieged, Celebrimbor is murdered, and the Elven realm falls.