This is the first book in the "Harry Potter" series. It introduces readers to the wizarding world of Harry Potter, an orphan who discovers that he is a wizard on his eleventh birthday. He is invited to Hogwarts School of Witchcraft and Wizardry, where he learns about his parents' past, makes new friends, and faces challenges. The plot revolves around Harry's discovery of the Philosopher's Stone, an artifact that grants immortality.