Being the tenth successor of the Cervantes Duchy, the empire’s guardian, Diez was forced to live in a way that his position required. Though people might think that his family was amazing, he knew that they were nothing but a hunting dog-- a servant that would kill and do the dirty deeds for the imperial family. With a promise of salvation, the princess, Wynnona de Borbon, approached him and asked him to be her knight. The just princess who wanted to change the rotten empire became his master. Was it a start of a new life? Or will the princess fail to save him as he was already bound for destruction?