Five female high‑school friends reunite to form the secret crime‑fighting organization Sailor Victory. They command three giant ninja robots, Gion, Momoyama, and Sagano, to battle evil in the virtual‑future city of Mikado. Their mission is jeopardized when a disgraced and disgruntled city official abandons his post, turns to the dark side, and joins forces with the sinister Margarita.