Bob Morane

On their journey through the worlds of Ananke, Bob, Bill and Sophia come across a place where people have to toil as farm labourers in sweltering heat. The ruler of the city is Emperor Haingue, who can fly just like his supreme ruler Golo and his soldiers. The city is threatened by a mysterious creature called Robin, who kidnaps people again and again. Bob discovers that the emperor himself is behind the kidnappings, because he and his men can only fly with the help of the mental energy of his victims. When he informs the people about this hoax, a revolt breaks out ...