There was a researcher at a certain research institute who was a little, just a little bit different. He was intelligent and best in Japan when it came to medicine...? No, the best in the world...? But he had a strong grudge against women? A strong desire to conquer. Yes, this is the story of such a man, a cruel doctor. A cruel doctor at a crazy torture institute who has an inferiority complex towards every woman in the world and plans to conquer every woman in the world one day. The super-powerful aphrodisiac that the doctor has been developing is finally complete, and he joins forces with the evil organization, the Black Lion Society, to face off against cheeky women. The Black Lion Society immediately traps and restrains a cheeky SWEET Angel and takes her to a certain place for an experiment... The restrained woman is "Sarara", a SWEET Angel whose name has been heard everywhere recently. Sarara is forced to drink a newly developed super-powerful aphrodisiac while restrained and unable to move. She resists with a strong will, but her body reacts to the super-powerful aphrodisiac developed by the cruel doctor, and she is toyed with and tormented by the men of the Black Lion Society, and is enveloped in incredible pleasure until her ego collapses. What will become of the beautiful girl Sarara?!