As Harry begins his sixth year at Hogwarts, he discovers an old book marked as 'Property of the Half-Blood Prince', and begins to learn more about Lord Voldemort's dark past.

Harry starts his fourth year at Hogwarts, competes in the treacherous Triwizard Tournament and faces the evil Lord Voldemort. Ron and Hermione help Harry manage the pressure – but Voldemort lurks, awaiting his chance to destroy Harry and all that he stands for.

Harry, Ron and Hermione return to Hogwarts for another magic-filled year. Harry comes face to face with danger yet again, this time in the form of escaped convict, Sirius Black—and turns to sympathetic Professor Lupin for help.

Ignoring threats to his life, Harry returns to Hogwarts to investigate – aided by Ron and Hermione – a mysterious series of attacks.