At Ataka Academy, ordinary staff member Kotaro Gonda hides a dark secret—he is actually the school's chairman, secretly controlling the institution and repeatedly abducting women who match his preferences, subjecting them to bondage torture and domination. Into this world steps cool and intelligent new female teacher Ryoko Kiyoke, who becomes the perfect target for Gonda. Drawn into the academy's hidden underworld, she gradually uncovers its true nature and is fated to confront him directly.