With a new brother at home, there's plenty of work to do in the village, and things only get busier when an old friend unexpectedly turns up. Unfortunately, while Peter is living peacefully, Erryn is not doing quite so well, and the consequences will be felt the world over. _An Unbound Soul: Part 4: Soul _is the fifth volume set in Erryn’s world and the fourth in the continuing tale of Peter’s adventure.