One Piece Movie 07: Karakuri-jou no Mecha Kyohei
English title: One Piece: The Giant Mechanical Soldier of Karakuri Castle
Japanese title: ワンピース THE MOVIE カラクリ城のメカ巨兵
Alternative titles: One Piece The Movie: Karakurijou no Mecha Kyohei, One Piece: Karakuri Shiro no Mecha Kyohei, Karakuri Castle's Mecha Giant Soldier
Type: Movie
Source: Manga
Episodes: 1
Status: Finished Airing
Aired: Mar 4, 2006
Duration: 1 hr 34 min
Rating: PG-13 - Teens 13 or older
Studios: Toei Animation
Producers: Fujipacific Music, Shueisha
Genres: Action, Adventure, Fantasy
Demographics: Shounen

The Straw Hat crew salvages a treasure chest from a sinking wreck, inside which they find an old lady. To get the pirates to take her home, she promises them the treasure of a golden crown on her island: Mecha Island. Upon arrival, the crew is attacked by the lord of the island but he has a change of heart and decides to seek their help to solve the mystery of the Golden Crown.

(Source: ANN, edited)