Nuclear testing has resulted in the abrupt evolution of the Fumoon, a tiny but highly intelligent humanoid race on a small island, who are detected by Dr. Yamadano. Except for a few witnesses including the detective Shinsaku Ban, and the young men Rock and Kenichi and Kenichi’s sister Pichi (Pinoko), no one believes him. The Fumoon are kidnapping animals from around the world to bring with them as they use their space ships to evacuate the earth, because they know Earth is shortly to be destroyed by an enveloping cloud of black gas created by a stellar explosion. The Fumoon intend to abandon mankind, but one Fumoon, Rokoko, who becomes good friends with Kenichi, tries to help Dr. Yamadano and the others to develop a space ship to allow a few humans to escape, with the help of Dr. Ochanomizu and Dr. Frankenstein.
Unfortunately the movie Fumoon is not yet available on HBO Max.
| Directing | Hisashi Sakaguchi | Director |
| Writing | Hisashi Sakaguchi | Writer |
| Writing | Osamu Tezuka | Writer |
| Sound | Yuji Ohno | Original Music Composer |
| Visual Effects | Yoshinobu Aohachi | Key Animation |
| Visual Effects | Shigetaka Kiyoyama | Key Animation |
| Visual Effects | Yuzo Tomizawa | Key Animation |
| Visual Effects | Shinji Otsuka | Key Animation |
| Visual Effects | Sadayoshi Tominaga | Key Animation |
| Visual Effects | Katsutoshi Kobayashi | Key Animation |
| Visual Effects | Tatsuya Furukawa | Key Animation |
| Visual Effects | Makoto Ito | Key Animation |
| Writing | Osamu Tezuka | Comic Book |
