The six movie version and the third of the feature-length films (90 minutes). Luffy's pirate team visited 'Omatsuri Island' ('Omatsuri' means 'festival'), and there they met a mystery man named 'Baron Omatsuri'."I'll give you a secret treasure. if you can a hellish ordeal", said Baron Omatsuri, and Luffy tries the 'ordeal' with his fellow crew members. An unique suspense/adventure film produced by the staff which is different from that of the TV series.