Nana, the genius investigator selected for a special mission to counter an extreme drug. This time's mission is to infiltrate a secret hideout conducting illegal experiments. However, due to a clever trap and betrayal by her comrades, she is forced to inhale a powerful aphrodisiac gas. When she wakes up... Nana is immobilized by a guillotine restraint device prepared specifically for her. Although skilled in martial arts, her body cannot move as a woman, and she endures the relentless forceful ● deepthroating from the rampaging test subjects! Resistance relying on pride and spirit is futile, as her body is defiled by massive amounts of semen contaminated with the aphrodisiac gas. Her consciousness fades with each breath of the miasma, defeated and orgasming repeatedly by the hated traitor's ●! She falls into a hell of extreme group ● in the enemy's lair where no help comes!
