Life in the prehistoric Claw Clan means bowing to the wishes of the males. Seita is in love with Husek, but the leader of the clan and her mother want her to join with two others; one a powerful male of the clan and the other a mysterious unknown. When Seita is betrayed by her love, a mysterious woman with the ability to take the essence of men transforms her, changing Seita from mortal woman to immortal monster.