previously: Ranma is tricked by the black moon family into signing a contract. They cure all his curses and keep the by products, which turns out to be his female curse and the nekoken merged together in a new body. Now: Mistress Nine has possessed Hotaru and is trying to find the grail. The Sailor Senshi are trying to stop her and either save or kill Hotaru who is sailor Saturn. Ranma is not on either side except her own and vows to stop all plans. Prequel: The Black Moon Contract. (Sailor Moon Crossover.)