Bouken-tachi Gamba to Nanbiki no Nakama
Japanese title: 冒険者たち ガンバと7匹のなかま
Alternative titles: The Adventurers Gamba and his Seven Friends
Type: Movie
Source: Novel
Episodes: 1
Status: Finished Airing
Aired: Mar 4, 1984
Duration: 1 hr 35 min
Rating: G - All Ages
Studios: Tokyo Movie Shinsha
Genres: Adventure
Themes: Anthropomorphic
Demographics: Kids

When a badly injured mouse staggers off a ship in Tokyo Harbor, he tells the local mice that he has escaped from Devil's Island, where Noroi, the evil white weasel, has crushed the mice with his reign of terror. Tough-guy Gamba rashly promises to help depose Noroi.

(Source: The Anime Encyclopedia)