International Special Investigations agent Meirin arrives in Japan to pursue Beryl, the leader of the terrorist organization Shadler. Detecting her movements, Shadler dispatches Vareron, a masked warrior with a deep grudge against Meirin, to assassinate her. Vareron ambushes Meirin as she steps out of the shower in her hotel room. However, Meirin evades the attack and chases after the fleeing Vareron. At an abandoned building, Meirin is exposed to a paralyzing gas—part of Vareron's cunning trap. Falling victim to his scheme, Meirin is helpless as Vareron, seeking retribution for past wounds hidden beneath his mask, relentlessly torments her beautiful body. For both Meirin and Vareron, this encounter marks the beginning of a new battle.