After her beloved brother is killed, Kaori Haruna vows to avenge his brother and joins an Italian terrorist group. There, she learns all sorts of killing techniques before returning to Japan. At one point, she seduces men with her voluptuous body. Yabuki Joji falls in love with her and becomes obsessed with her, even risking his career as a detective. However, when Kaori turns into a ruthless sniper and fires her silenced gun, the curtain rises on a bloody tale of revenge...