Earthsea

In Earthsea, a world of one thousand and one islands, priestesses leaded by the High Priestess Thar lock in the tomb of Atuan the diabolic Nameless Ones. However, the ambitious King Tygath, who intends to unite the realm, wants also to release the demons to learn their secret of immortality, and uses his mistress Kossil to poison Thar. Kossil expects to be nominated the next guardian and get the keys and enchantment that keeps the darkness forces apart, but Thar selects the pure Tenar. Meanwhile, in the island of Gont, the reckless and rebel son of a blacksmith Ged dreams on being a wizard. He is sent to the island of Roke to learn magic, but in a dispute with a corrupt mate, he accidentally summons a powerful Nameless One that becomes The Gebbeth and wants to devour his soul. Now his only chance to survive is to follow the lead of a dragon and find the two parts of an amulet to destroy the Nameless Ones.