Kaoru Yoshikawa, a senior investigator at the Kanto Drug Enforcement Bureau, has hated sexual crimes since she was a child, due to the influence of her father, who was an executive at the bureau. Through her dogged investigation, Kaoru determines that the organization distributing illegal sexual substances on the streets is the "Itto Alliance"! She goes to the hideout alone, but falls into the trap of the Itto Alliance and is captured. Ironically, the sexual substance she was after, which has a strong aphrodisiac effect, is injected into her body, but she endures it with her strong mental strength...