Gamba to Kawauso no Bouken
Japanese title: ガンバとカワウソの冒険
Type: Movie
Episodes: 1
Source: Unknown
Genres: Adventure
Producers: Tokyo Movie Shinsha
Duration: 1 hr 15 min
Rating: PG - Children

The final chapter of the Gamba saga, released in theatres 15 years after the original TV series.

(Source: AniDB)