Fairlight, still in the employ of Equus, embarks on a mission to rescue the kidnapped ponies being held in the human world. Upon his return he finds all is not well within the agency, with the insidious shadow of treachery and betrayal never far away. After a trip to Ponyville, Fairlight learns more about his heritage and with the help of his partner, Tingles, seeks out the ruins of his ancestral home. A terrifying revelation threatens to unhinge his mind and he runs afoul of the wendigo's ancient foe, the White Witch herself. Banished from the home he loves, Fairlight must decide whether to go willingly into exile or fight to clear his name and rescue his beloved Shadow from her unknown fate in the Wither World.