A powerful event foretold in ancient legend is revealed. In the forgotten past, people from Earth were exiled from its surface: Two distinct societies emerged, one under the ground and one above it. Ancient guardians remained to guide remnants of humanity. 

Life-altering transformation is afoot. Despite the odds, Coraleen and Feven, from other worlds, must struggle through their differences. Can vastly different societies come together and bring about the Journey of Joining or will everything be torn apart? Journey of Joining is the first book of the Earth & Sky trilogy.