Corporate spy Nanami infiltrates an import company on a special mission to hack confidential documents. However, she soon discovers the company is not just a regular business, but part of a secret society aiming to control humanity and claim the world for themselves. As her identity is exposed, Nanami fiercely defeats one enemy after another. Impressed by her exceptional abilities, the secret society's leaders conspire to brainwash her and transform her into a powerful, obedient weapon through forced modification.