"The Ruins of Gorlan" is the first book in the Ranger's Apprentice series by John Flanagan. It follows the story of a young boy named Will, who aspires to become a knight but is instead chosen to be an apprentice to the mysterious Rangers. The story is set in the fictional kingdom of Araluen and explores themes of friendship, bravery, and self-discovery. As Will trains under his mentor, Halt, he learns the skills of stealth, archery, and survival. The plot thickens when a dangerous enemy, the Morgarath, threatens the kingdom. Will and his friends must confront their fears and work together to protect their home from impending doom.