Harry's fifth year at Hogwarts is a dark one. Raging with hormones, the 15-year-old wizard returns to the School of Witchcraft and Wizardry to confront slanderous gossip, a cruel new professor, and a Ravenclaw girl on whom he has a crush. Ominous events lead to the family home of Sirius Black, where Harry learns about the mysterious Order of the Phoenix. Amid disturbing dreams, unraveling a dire prophecy, and studying for the Ordinary Wizarding Levels exams, Harry and his friends struggle into young adulthood.