When ex-soldier turned mercenary, John Gold, learns of the murder of his best friend, he sets off on a mission to find out what happened. What he discovers is a sinister conspiracy and he sets about taking down those responsible one by one.
In Harry Potter's sixth year at Hogwarts School of Witchcraft, he finds a book marked mysteriously, "This book is the property of the Half Blood Prince", which helps him excel at Potions class and teaches him a few dark and dangerous ones along the way. Meanwhile, Harry is taking private lessons with Dumbledore in order to find out about Voldemort's past so they can find out what might be his only weakness.
Voldemort's power is growing stronger. He now has control over the Ministry of Magic and Hogwarts. Harry, Ron, and Hermione decide to finish Dumbledore's work and find the rest of the Horcruxes to defeat the Dark Lord. But little hope remains for the trio and the rest of the Wizarding World, so everything they do must go as planned.
Harry, Ron, and Hermione continue their quest of finding and destroying Voldemort's three remaining Horcruxes, the magical items responsible for his immortality. But as the mystical Deathly Hallows are uncovered, and Voldemort finds out about their mission, the biggest battle begins, and life as they know it will never be the same again.