Recruited by a clandestine police organization, "K" must stop a plot by student radicals to create anarchy in Japan. Armed with a hi-tech steel yo-yo, and a new name (Asamiya Saki), she must infiltrate an elite high school to find the terrorists but finds an even more sinister plan is about to unfold.
A conflict of interest between two high-kicking assassin sisters is complicated as they're pursued by the criminals who hired them and an equally high-kicking female cop.