Echo is a Heavenly who is assigned to protect the son of an Elder of Babel named Urarmar. During his assignment, Echo must ally with other Heavenlies to ward off the advances of Exiled Heavenlies, all while protecting Urarmar. Urarmar is a young Elder's son trying to find his way in the politics of an ever growing empire, whose culmination is anticipated with the completion of a massive tower that will unite all mankind. As Echo struggles to protect his subject in many ways, Urarmar must struggle through the politics of Babel and hold on to principles of justice, integrity, and love.