After deeming her insufferably perfect, Saint Philia's fiance broke off their engagement and sold her to another country in desperate need of her powers. Philia returns her new home's unexpectedly warm welcome by performing an ancient and difficult technique known as the Great Break Disturbance Form to save them from a demonic invasion. News of Philia's incredible feats reaches her sister and fellow saint Mila, who also catches wind of a conspiracy. When forced to choose between her saintly duties and loyalty to her family, which will Mila pick?