CRAYON SHIN-CHAN: THE HIDDEN TREASURE OF THE BURI BURI KINGDOM

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. — Description from AniList community (anilist.co).