Stripped of his immunity, Peter's soul has been laid bare to Erryn.
Fortunately, she has accepted the importance of his free will, even permitting him to try to invigorate the world's stagnant civilization. As his first small steps quickly snowball out of control, he's left wondering exactly what the consequences of his actions will be.
An Unbound Soul: Part 3: Science is the fourth volume set in Erryn's world and the third in the continuing tale of Peter's adventure.