Disowned and self-exiled, Satsuki Kiryuin searches to fulfil her father's last request, to prevent the plans of her mother and the Life Fibers. Called back to the academy she built by an old friend, she finds it under the tyrannical rule of her sister Ryuko and her Kamui. It's about time for a family reunion.

In the advent of strange, uncontrollable powers awakening and with no-one to rely on, Aki runs as far away as she can. All the way to Satellite, an appropriate place for a monster to live. Ultimately, no-one's as awful as the world makes them out to be.