Genius investigator Nana is selected for a special mission targeting dangerous chemicals and infiltrates a hideout conducting illegal experiments. A sophisticated trap and a colleague’s betrayal expose her to powerful aphrodisiac gas. She awakens immobilized in a guillotine-style restraint made specifically for her, unable to use her martial arts as crazed test subjects force one deep-throat assault after another. Her pride and willpower crumble as contaminated semen covers her body. Each breath of gas clouds her mind further, and the traitor’s cock forces repeated orgasms until she is trapped in a drug-fueled gang-assault nightmare with no rescue coming.