Orphaned at a young age, her parents victims of a brutal double murder, Sawa was taken in by the detective assigned to her case. Not content to just watch as the imperfect justice system lets more and more criminals go loose every day, he decides to train her to be his instrument of justice. After all, who'd suspect a pretty college student of being a deadly vigilante! Now she must decide between her allegiance to her guardian and her loyalty to her one and only friend, a fellow sword of justice.