Sadistic Remy is a skilled female fighter rising through the ranks of Trigger, a criminal organization hosting an underground martial arts tournament. She is offered a special condition by Kensaki, a high-ranking member of Trigger: defeat the next opponent, a massive powerhouse fighter named Kumikiri, and she will be granted full membership. Remy struggles fiercely but ultimately defeats Kumikiri, earning her place within the organization. However, her true identity is Reimei Hibiki, an undercover detective. She infiltrates Trigger's database to gather intelligence, but falls into a trap set by the suspicious Kensaki and is subjected to brutal torture. Though she withstands the torment without breaking, another man appears—not to torture her, but to assault her in a different way. His true identity, and the new crisis Remy now faces, begins here.