"A girl is..." were the first things Katherine Maiz could ever think about when it came to her great grandfather. Treated like short change by her great grandfather's teachings, Katherine is endlessly fighting something she cannot grasp. Theia was a woman that lived with Katherine's great grandfather before he married her great grandmother. And although she only heard rumors about this woman, she never understood why Theia did not marry her great grandfather, who was one of the richest aristocrats in the country of Dien. And for all Katherine knew, she probably hated Theia deep down in her heart. But what is the price for everything Katherine has to go through? Her family issues, her self-esteem, her sister's secrets, and more importantly Theia's secret?