The Spiritual Plane and all of its kingdoms have been devastated by the release of the mighty cherubim. The Descendant Refugees, led by Brody West, have been ejected from England, leaving all of their wealth and property behind in the hands of Prime Minister Gladstone. Destined for lands in Ireland, they find, instead, a hostile Shade King and his Leprechaun army waiting for them. However, the fallen angel, Black is not done with them yet. He means to see the Descendants humiliated and destroyed. But Lucifer still has his own plans to fulfill, and their bitter rivalry threatens to destroy anyone caught between them. Aftermath takes up the Descendants Saga from the perspective of young Cole as he finds a new ally in a mysterious, young castaway he's still not sure he can trust...a powerful Descendant named Adolf.