Black Rose, a legendary martial artist bored by her own invincibility, enters a brutal underground fighting arena seeking a true challenge. She faces a genetically remodeled opponent who surpasses her in speed and strength, using sexual stimulation to dismantle her pride. In front of a voyeuristic crowd, the once-proud queen is forced to confront her hidden masochistic desires, ultimately succumbing to pleasure and total defeat.
Shien, a ninja descendant, enters a brutal underground fighting competition to rescue her sister, Kureha, from a sinister organization. Despite her skills, Shien is incapacitated by aphrodisiac gas and systematically broken in the ring. Upon her defeat, she discovers that Kureha has already succumbed to the organization's influence, leading to Shien's own inevitable descent into pleasure and submission.