Riho has the brains, strength, endurance, and beauty of an elite female agent. She infiltrates an enemy hideout to stop the theft of top-secret bioweapon technology and rescue a scientist, but the enemy discovers her weakness and traps her in a hell of rape and unbearable pleasure. Humiliated with a vibrator and tortured until she cums, the beautiful agent is reduced to a slave and sex toy for the beasts. After they inject her with an aphrodisiac, her mind finally breaks.