Lucy Heartfilia is a fallen heiress after her mother's death and her Father's disgrace, On her 18th birthday her Father trades her off to a workhouse her kicking and screaming got the attention of Natsu who happens to be the King of Fiore. After closing the workhouse and rescuing Lucy, Natsu takes her back to his palace where he has a special job for her LEMON IN SOME CHAPTERS NaLu