Things are not always what they seem. A period of peace between the Community of Four and the Unnatural Forces is abruptly jarred by the antics of the Horos twins and their nefarious family. What could be the cause of Florrie's sudden disappearance? And will Walter and Cora be able to find her before the four communities are forever changed? With the unraveling of the prophecy, the siblings are launched into a seemingly inescapable destiny...a destiny that will require all their wits and strength to survive. To stay with the Community of Four, or join the Unnatural Forces? One path leads to tranquility, and one path leads to world domination. The existence of the Knowers - those who can control the elements of fire, water, earth and wind - depends on their actions. Can they stay true to themselves as they face the mystery behind the ancient cave?