Aislinn of Bairbhe dreams of becoming a lady knight to honor the death of her fallen brother. To her mother's horror, King Patrick grants Aislinn's wish and she begins her long years of training.

Despite the mockery of the other pages, and the disdain of Prince Caelan who also trains to be a knight, Aislinn commits herself to her dreams and embarks on a journey of self-discovery and bravery. Through the years, Aislinn and Caelan grow from sparing classmates to good friends. They both know that someday Caelan will marry for the sake of the kingdom, but even that cannot keep them from falling in love.

The threat of war with the Speicans is a constant threat, and one that grows more frightening as she and Caelan train toward their eventual knighthood. Aislinn has committed herself to serving Arnhem, and has promised herself as King's Champion when Caelan claims the throne. She is willing to give up everything... her childhood, her life, even her heart for Arnhem. No matter the pain it brings.