It is preceded by The Secret Keeper.
Following Bella's revelation and their subsequent contribution at the Battle of Hogwarts, the Cullens set out on an educational journey a million miles away from the Highschool purgatory they've grown accustomed to.
The second wizarding war is over, and Voldemort has been defeated. Following their contribution to the final battle, McGonagall invites the Cullens to join Bella and her friends in their final year at Hogwarts.
After a summer of exploring magic, the Cullens return to the school, where they are sorted and officially inducted into the world of witches and wizards. Carlisle is granted an internship at St Mungo's Hospital for Magical Maladies and Injuries, and Esme takes up the role of 'Muggle Studies teacher', while their adoptive children join Bella in classes. The Cullens are restricted to subjects that do not involve wand-work, such as Potions, Herbology, Ancient Runes, Arithmancy, and Divination; however, they are eager to participate, and relish the opportunity to learn something new.
Bella's personal targets in her final year at Hogwarts include becoming an animagus, earning her place once again on the Gryffindor Quidditch team, and, finally, winning the Quidditch Cup. She is an avid fan of the sport and a dedicated player. Unfortunately, however, she and the Cullens have bigger things to worry about than Gryffindor versus Slytherin.
The old supporters of Voldemort are being rounded up by the Ministry. If caught, they face a one-way ticket to Azkaban. With no hope of worming their way out of this particular fate, the Death Eaters conclude that their only option is to pick up where they left off, and resume their efforts for a takeover.
The Cullens and the Minister for Magic soon realise that the Death Eaters have help. Together, they attempt to uncover their secret informant, so that they might finally defeat the remaining dark wizards once and for all.
The Wisdom Seeker is one section of a three-part story. As well as the main plot, the fiction contains scenes which aim to bridge the gap with the final installment: The Justice Reaper, a magical adaptation of Breaking Dawn.