Forward
What follows takes place in a universe where the events of Harry Potter and the Deathly Hallows did not occur. Harry Potter, Ronald Weasley, and Hermione Granger did indeed choose to forgo their final year at Hogwarts School of Witchcraft and Wizardry in favor of pursuing and destroying the horcruxes of the Dark Lord Voldemort, but the trio were not able to complete their mission.
Three years passed. Ron and Hermione gave up the hunt and returned to Britain, where they called upon the members of their old defense association and merged Dumbledore's Army with the Order of the Phoenix. Harry, however, continued to search obsessively for the horcruxes. He sometimes traveled back to London when the Order held important meetings, but his appearances became increasingly scarce. When our story begins, he has been absent for longer than a year.
Meanwhile, because he faced so little opposition from Harry, the Dark Lord Voldemort grew stronger by the day. . . .