A secret investigator for the Special Investigation Bureau that handles events covered up as state secrets, Shiina. Her younger brother was a researcher at a biological weapons research facility concealed by the government and was kidnapped by a terrorist organization. Shiina infiltrates the enemy hideout but is taken hostage with her brother as a bargaining chip. She is injected with a drug developed by her brother that amplifies pleasure and makes brainwashing easier, forcing her to expose her lewd form in front of him…
