Hisui Matsumiya, as Selleine aka Takayama Mizuki, is captured by cyborgs while conducting a terrorism investigation. Despite enduring intense torture, she refuses to surrender, strips off her Cell Suit, and transforms into Selleine. Using her immense power, she crushes the terrorists—only to be suddenly ambushed from behind by a massive mechanical tentacle that pummels her body. The assault exceeds her suit's durability, cracking part of her helmet. Her body is constricted and shocked with electricity, knocking her unconscious. When she attempts to escape, she's recaptured and subjected to even more brutal torture. The mastermind, "Gilbrain," is a computer designed to create artificial humans mimicking real people in order to preserve harmony among mankind. Now, a sinister plot unfolds—using Selleine as a model to extract and harness her negative emotions. The final battle between humanity and artificial intelligence reaches its climax—now.