Crayon Shin-chan: Buriburi Oukoku no Hihou

クレヨンしんちゃん ブリブリ王国の秘宝

A band of criminals want to get the treasure of the famous Treasure Island, but the key of the treasure chamber is guarded by a little kid. Then, they come to Japan and kidnap Shinosuke Nohara by mistake, who looks exactly like the little kid who has the key.