Researcher Mutsugoro takes his family to a remote and uninhabited island near Hokkaido, to study the local population of wild bears. Nearby poachers make his life difficult, and he "inherits" an orphaned bear cub, whom the family call Donbe and raise as one of their own.
| Writing | Masanori Hata | Original Story |
| Directing | Bonjin Nagaki | Director |
| Sound | Hiroshi Takada | Music |
| Production | Hidehiko Takei | Producer |
| Production | Yonehiko Watanabe | Producer |
| Writing | Keisuke Fujikawa | Screenplay |
| Visual Effects | Toshitaka Tsunoda | Animation Director |
| Visual Effects | Kiyomu Fukuda | Character Designer |
| Visual Effects | Kiyomu Fukuda | Animation Director |
