Kaho, an investigator whose frustration grows as her colleagues are successively caught up in a series of missing drug investigator cases. She obtains information from an informant and breaks into the Kuroshishi-kai hideout alone, but there's a trap! The elite investigator Kaho, who has been captured, has her body manipulated unjustly and is administered the illegal substance she was pursuing... She endures the approaching pleasure with her strong willpower, but cruelly breaks through her limits and is swallowed by pleasure! What will be the fate of the tanned-skinned investigator Kaho, who has a trained body!!