With the Tendos, the Saotomes, Ryoga, Shampoo and Ukyo misinterpreting Tatewake Kuno's invitation to his two loves, Akane and 'The Pig Tailed Girl', to try his new yacht, a whole new episode of chaos begins in the already unstable lives of the Saotome/Tendo clan. A mysterious shadow kidnaps first Akane's sister Kasumi, then continues on until all the girls disappear. All except everyone's favorite hydrotranssexual.
| Actor | Role |
|---|---|
 Kappei YamaguchiRanma Saotome ♂ (voice) | Ranma Saotome ♂ (voice) |
 Megumi HayashibaraRanma Saotome ♀ (voice) | Ranma Saotome ♀ (voice) |
 Koichi YamaderaRyoga Hibiki / P-Chan (voice) | Ryoga Hibiki / P-Chan (voice) |
 Noriko HidakaAkane Tendo (voice) | Akane Tendo (voice) |
 Hirotaka SuzuokiTatewaki Kuno (voice) | Tatewaki Kuno (voice) |
 Minami TakayamaNabiki Tendo (voice) | Nabiki Tendo (voice) |
 Kikuko InoueKasumi Tendo (voice) | Kasumi Tendo (voice) |
 Toshihiko SekiMousse (voice) | Mousse (voice) |
 Rei SakumaShampoo (voice) | Shampoo (voice) |
 Kenichi OgataGenma Saotome (voice) | Genma Saotome (voice) |
 Ryusuke OhbayashiSoun Tendo (voice) | Soun Tendo (voice) |
 Hiromi TsuruUkyo Kuonji (voice) | Ukyo Kuonji (voice) |
 Ichiro NagaiHapposai (voice) | Happosai (voice) |
 Miyoko AsoCologne (voice) | Cologne (voice) |
 Nobuo TobitaSarutoru (voice) | Sarutoru (voice) |
 Issei FutamataTorristan (voice) | Torristan (voice) |
 Toshihiko NakajimaWanton (voice) | Wanton (voice) |
 Mitsuaki MadonoToma (voice) | Toma (voice) |