Disturbing family secrets, treachery, and intrigue all lie ahead for the Cassadine Clan. After surviving the last battle and defeating the Rosen Army, they prepare to take reign over their kingdom while adjusting to life in the mortal realm as young adults. Sebastian, the elder son and soon-to-be crowned king, struggles with managing his everyday "human" life, the forthcoming transition, and serving within the Bliden Tribe, a mysterious society with a nefarious purpose. Little do he and the family know about the impending danger and betrayal they will face from one of their own. Clandestine meetings, covert missions, dangerous relics, and surprising twists and turns put loyalties and relationships to the test as they learn of the faction that wishes to destroy them and discover that they must not only save themselves, but humanity as well.