There's a ring that's been residing in a pocket, provides longevity to Bilbo who's a Hobbit, but it's waiting to be found, by Sauron to which it's bound, you need the fires of Mount Doom, if you're to stop it. Frodo (who has been given the ring by Bilbo) and his chums go on a journey, become pursued by an increasingly large army, comprising orcs and nasty wraiths, hunting them down from place to place, it's quite bizarre, and very often, a bit barmy. They're supported on this quest by Dwarves and Elves, plus there are people very similar to ourselves, and a wizard with a beard, has a hat that's quite dog-eared, some have magic, on occasion they cast spells.