Enter the brutal and elite world of a war college for dragon riders.
Series length expected to be five books.
The series is also known as: * Empir?jus (Lithuanian) * 贵濒补尘尘别苍驳别办ü蝉蝉迟 (German) * 贰尘辫í谤别辞 (Spanish) * Empireum (Polish) * Fourth Wing (Dutch) * Емп?ре? (Ukrainian)