Harry Potter begins his sixth year at Hogwarts School of Witchcraft and Wizardry in an atmosphere of uncertainty, as the magical world begins to face the fact that the evil wizard Voldemort is alive and active once again.

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.