In the final installment of this popular series, the protagonist and his friends decide to leave their school to complete the mission left to them by their late headmaster - to destroy the remaining pieces of the antagonist's soul, hidden in various objects. As they journey through the wizarding world, they uncover the truth about the antagonist's past and the legend of the Deathly Hallows. Amidst the escalating war, they are captured and narrowly escape, leading to the ultimate battle at their school where many lives are lost. The protagonist learns he must sacrifice himself to truly defeat the antagonist, but is given a second chance at life and finally triumphs, ending the war. The story concludes with a glimpse into the peaceful future they have all earned.

A young girl named Coraline Jones moves into a new home and discovers a secret door leading to an alternate version of her life, where her "Other Mother" and "Other Father" reside. Although this parallel world seems better at first, she soon realizes that her Other Parents want to keep her there permanently and that they are not as they appear. Coraline must use her bravery and wits to save herself and her real parents, who have been kidnapped by the Other Mother, and free the souls of other children trapped in this alternate world.

The novel follows the unusual life of a boy named Nobody "Bod" Owens who, after his family is murdered, is raised by the supernatural inhabitants of a graveyard. Under the protection of ghosts and his guardian, who is neither living nor dead, Bod learns about the living world and the dangers it holds, including the man Jack who continues to hunt for him. As he grows up among tombstones and crypts, Bod explores the limits of his graveyard home, encounters creatures of the night, and ultimately confronts the sinister forces that took his family from him, all while trying to lead a normal life despite his extraordinary upbringing.