T. A Barron

A young boy who has no identity nor memory of his past washes ashore on the coast of Wales and finds his true name after a series of fantastic adventures.

In order to stop Rhita Gawr from destroying Avalon, Merlin's grandson, Tamwyn, and his friends, Elli and Scree, engage in battles with the warlord and his army of warriors underground, on Earth, and in the sky.

Having voyaged to the Otherworld in his quest to find himself, the young wizard Merlin must face fire in many different forms and deal with the possibility of losing his own magical power.

As the warlord Rhita Gawr tries to gather enough power to destroy Avalon, Tamwyn--the heir to the powers of his grandfather, Merlin--and his friends embark on separate quests to try to save their world.