The Shannara Chronicles is an adaptation of Terry Brooks' fantasy novels (The Sword of Shannara, The Elfstones of Shannara, and The Wishsong of Shannara) and involves the aftermath of the wars of ancient evils, featuring gnomes, elves, warlocks, Druids, and many other fantasy characters. The story also includes a 'Sword' that can only be used by the true heir of Shannara.
In the television series The Shannara Chronicles is set thousands of years after the destruction of the known civilization, and the story follows Amberle, an Elven Princess, Wil, a half-human half-elf, and Eretria, a human, as they set out on a quest to stop a Demon army from destroying the Four Lands.
Terry Brooks has stated in an interview that he is happy with the way his story has been adapted.