Crystal Heartlight the Cat is poor, she and her sister have been since her house was raided and her parents were killed "In King Dearest's name." Princess Kat Dearest the Cat, meanwhile, is King Dearest's youngest daughter, who grows tired of the strict schedule she and her own sister have to follow. Both the princess and the pauper desire to live life in the other's shoes, and Crystal's fairy fox may just be the tipping stone to change that.