When Caleb, Zoe, and Angie discover a mysterious oak tree, they unexpectedly get pulled into a fantastical world of dragons, merfolk, and fairies. Landing in different parts of a world they don't know, they meet dragons, fairies, merfolk, and a host of others taking part in a cross-cultural festival that is threatened by strange weather and charges of treason. The trio must rely on each other and some newfound friends to figure out the solution to the immediate problem but also find the book that will allow them to return to the world they left. Can they overcome these challenges and find their way home again?