"Beren was a mortal man, but Lúthien was an immortal Elf. Her father, a great Elvish lord, was deeply opposed to Beren, and imposed on him an impossible task that he must perform before he might wed Lúthien.

Undaunted by Lord Thingol’s challenge, Beren and Lúthien embark on the supremely heroic attempt to rob Morgoth, the greatest of all evil beings, of a Silmaril, one of the hallowed jewels that adorn the Black Enemy’s crown."

Watch the full animated lore doc here: https://www.youtube.com/watch?v=pMjkvxWPGQo&list=PL2Qq-rUSt7b1P4htSWJv3UUPP5E0HcquL&index=25