Harry Potter is a popular fantasy series written by J.K. Rowling. It follows the story of a young orphan named Harry Potter, who discovers on his eleventh birthday that he is a wizard. He is invited to attend Hogwarts School of Witchcraft and Wizardry, where he learns about magic, makes friends, and faces various challenges. As Harry navigates through his school years, he unravels the mystery of his parents' death and confronts the dark wizard, Lord Voldemort, who seeks to gain power and control over the wizarding world. The series explores themes of friendship, courage, and the battle between good and evil in a magical and enchanting world.