While working as a waitress at a cafe, Kikko Hoshino is asked by a man named Jiro Hitoyoshi to do a job for him, preventing a top Japanese scientist named Professor Onda from selling research secrets to a corporate spy. Strangely enough, the supposed spy is seen giving Onda a package instead of taking one from him. Even so, Kikko stops Onda from leaving, as the spy reveals himself to be an alien from Planet S. Kikko reveals herself to be a magical girl, and teleports outside with the package...