One Piece: Chopper’s Kingdom on the Island of Strange Animals is an anime film that premiered in spring 2002.

About the production: the story comes from an original script, the film runs about 55 minutes and its current status is "finished".

Its main genres are action, adventure, comedy and fantasy, with themes such as Pirates, Animals, Shounen and Ensemble Cast.

On AniList, One Piece: Chopper’s Kingdom on the Island of Strange Animals has an average score of 64%, an average score, and appears on 23,289 users' lists.

The franchise continues in or follows from: ONE PIECE: Nejimaki-jima no Bouken and ONE PIECE THE MOVIE: Dead End no Bouken.

The crew comes upon Crown Island where the animals can talk and they makes Chopper their new king. But there are human hunters there also looking for the legendary horns that will give the person who consumes it immense power. Luffy and friends must stop them from destroying this animal kingdom. (Source: Anime News Network)

Official synopsis from AniList.