An ancient, wise soul, Rhea has roamed the earth for millennia. She appears in civilizations as they rise and fall, bringing gifts of culture, healing and evolution to the people. Some say Rhea will be here when the last humans leave Earth. When Lila Sophia meets Rhea she both recognizes a sister priestess and a lover. As the story progresses, it is revealed that Rhea is Theo's twin sister, born of a King and a Priestess of Astera in a time long forgotten.