"The Dragonbone Chair" is the first book in the Memory, Sorrow, and Thorn trilogy by author Tad Williams. Set in the fictional world of Osten Ard, the story follows a young kitchen boy named Simon who becomes embroiled in a struggle against dark forces threatening the realm. The novel combines elements of fantasy and adventure, featuring a rich tapestry of characters, including knights, wizards, and mythical creatures. As Simon embarks on his journey, he discovers his own potential and the importance of friendship and loyalty in the face of adversity.