Desultamar

Far off, across the sea, lies the Kingdom of Anasaria. Their last king was exiled long ago, and Ilah and Ivah, the twin stones at the heart of Anasaria's power, have been lost. The once fair and powerful fortress of Abessair is now inhabited by seven Dark Lords, and has become the evil fortress of Ultamar. The Anasarian army are under an ancient curse, and serve the Dark Lords in their tyrannical rule over the people.
In the land of Wesmere, lost in a misty valley, two farm boys, Rowan and Hyrn, discover the ruins of a long-abandoned castle. There, they are given one of the stones of power, stolen hundreds of years before by the Anasarian, Prince Darion. The brothers learn that the sword of the Kings of Anasaria, Acclimoss, lies hidden high in the mountains. The fate of Anasaria now rests in their hands.
The desire for fun and adventure is soon overtaken by the realities of fear and danger, and the burden of responsibility, as the comfort and serenity of home are left far behind.