Cob knows it is finally time to bring others to the second compound. As people start mysteriously disappearing, fear and apprehension fill those left behind. New residents in the sister compound are amazed at the many things to learn. There is excitement about their new life, but there are also new problems and challenges to face. Will Lisa be able to forgive her dad? Can Mrs. Garcia give up Paden to Karen and Jerimiah? Can surface people be trusted with the knowledge of the compound? Will the compound residents and surface people be friends or enemies? Find the answers to these questions and meet a cast of new characters in Under’s most exciting book yet, Knowledge and Wisdom.