La emperatriz de los Etereos / The Empress of the Ethereal Kingdom

When Bipa's friend Aer, the son of an outsider, leaves the caves where her people live to seek the legendary empress of the air, Bipa decides to bring him back, but as she follows him from one dangerous realm to another she finds people become increasingly transparent.When Bipa's friend Aer leaves the caves where her people live to seek the legendary empress of the air, Bipa decides to bring him back, but as she follows him from one dangerous realm to another she finds people become transparent.