Harry Potter thought the war was over. Until his scar starts hurting again, his youngest daughter begins speaking a dead language in her sleep, and a boy who doesn’t exist starts appearing in all their dreams. At first, it looks like trauma. Then reality begins to change in small, impossible ways: memories shift, names vanish. Things begin to unravel—the very future, included. Your future. And Harry has no choice but to confront the possibility that it never ended—that something ancient has woken beneath the wizarding world.