A blue-eyed female ninja and assassin named Hijiri by chance, she encounters a thief trying to steal a secret scroll of immortality from the storage depository of a Christian daimyo named Rokusha, but gets injured in the ensuing battle. She's rescued by a Christian named Seitaro (Mutsuo Yoshioka) and they soon begin to fall in love with one another. However, their happiness is short-lived. Declaring Christianity "western heresy", a powerful buddhist takes aim at Hijiri and the Christians and cooks up a dark plot to deal with them.
