The Adventure of Gamba and the Otter (1991)
Original title: ガンバとカワウソの冒険
The Adventure of Gamba and the Otter is a 1991 Japanese-language adventure movie directed by Shunji Oga, with a running time of 1h 15m. It stars Masako Nozawa, Junko Hori and Hiroko Kikuchi.
When Chuta, a badly injured mouse, staggers off a ship in Tokyo Harbor, he bumps into out-of-towners Gamba and Bobo, who are at a party being given by Yoisho, the sailor-mouse. Chuta tells the local mice that he has escaped from Devil's Island, where Norio the evil ermine has crushed the mice with his reign of terror.