Lili is the inheritor of Sayama Hashin-ryu martial arts, an unbeatable sword style that only reaches its full potential when implemented in a life or death struggle for survival by a female practitioner. As part of her initiation ceremony, Lili is sent back to the age of ronin and ninjas to protect a small town from a gang of evil bandits. Fighting her way through the band, she comes face to face with ninja queen Kinu. Kinu is not afraid to disrobe and attack, using a sword style strangely similar to Sayama Hashin-ryu. Could she be Lili's long lost ancestor.