When the Chamber of Secrets is opened again at the Hogwarts School for Witchcraft and Wizardry, second-year student Harry Potter finds himself in danger from a dark power that has once more been released on the school.

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.

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.

About to enter his second year at Hogwarts School of Witchcraft and Wizardry, Harry Potter is visited by a house-elf named Dobby and warned not to return. Harry ignores his warning and returns to Hogwarts, where strange things begin to happen, as people are becoming petrified, Harry hears a voice which seems to be coming from within the walls, and Harry's newly-discovered and unsettling ability to communicate with snakes turns even his friends against...

As Harry faces his upcoming fifth year at Hogwarts Academy, there are increasing rumors of dark times coming and of Lord Voldemort's return to power, and a secret anti-Voldemort society, The Order of the Phoenix, begins meeting again.