J. K. Rowling

While spending the summer with his dreadful aunt and uncle as a young man, Harry Potter is attacked by a group of evil spirits called dementors. After using magic to defend himself, Harry is taken away to the headquarters of a group of wizards called the Order of the Pheonix. He later returns to his school, Hogwarts, where he must deal with a difficult new professor and with betrayal by some of his friends. Eventually Harry is lured into a trap set...

Burdened with the dark, dangerous, and seemingly impossible task of locating and destroying Voldemort's remaining Horcruxes, Harry, feeling alone and uncertain about his future, struggles to find the inner strength he needs to follow the path set out before him.

Fourteen-year-old Harry Potter joins the Weasleys at the Quidditch World Cup, then enters his fourth year at Hogwarts Academy where he is mysteriously entered in an unusual contest that challenges his wizarding skills, friendships and character, amid signs that an old enemy is growing stronger.