A young boy and a girl with a magic crystal must race against pirates and foreign agents in a search for a legendary floating castle.
Starring Keiko Yokozawa, Mayumi Tanaka, Minori Terada, Kotoe Hatsui, Fujio Tokita, Ichiro Nagai, Hiroshi Ito, Machiko Washio, Takuzō Kamiyama, Yoshito Yasuhara