Lady Brienna Allegoran is a history teacher in a world where there are seven kingdoms, each themed around one of the "seven deadly sins". She likes her job, because of her passion for her country, the Kingdom of Pride, and its history. But she's isolated in the town aptly named Lonely White Mountain. She has a great best friend, Tawny Lionheart. But she longs for the touch of a man, even if she would not admit that to herself or to anyone. Surprisingly, she's chosen by the school headmaster for a special mission, because she's rumored to be frigid, able to focus solely on the mission. It will involve extensive travel with handsome, wealthy bachelor Lord Thunderrain.