One Piece: Chopper Kingdom of Strange Animal Island is like watching an extended episode of the One Piece and that's why it's a worth the watch. In truth fans of One Piece will get a bigger kick out of watching this then people who aren't familiar with the anime, it's more or less made for them. The story in the film is typical One Piece affair with one thing unexpected happening, resulting in the crew trying to resolve the situation while something else happens that will interlock with the main plot and then the situation is sorted through the power of courage and friendship.
Watching this was just like watching the series except with a higher degree of animation and it is the quality of animation that makes the film shine. One Piece episodes around the time of 2002 looked okay but the movie quality allows for some really smooth character animation and richer colours for backgrounds which really adds to the overall experience. The characters in the film are just as good as they are in the series and in terms of sound and music they happen to be in good supply too. Overall I really liked the film just because it was One Piece in a higher quality animation; it's definitely worth the watch if you can't get enough of the One Piece adventures.