One Piece: The Movie
Kanji ワンピース
Rōmaji Wan Pīsu
Directed by Atsuji Shimizu
Written by Michiru Shimada
Narrated by Mahito Ōba
Music by Kohei Tanaka
Cinematography Toshiharu Takei
Editing by Shinichi Fukumitsu
Kōichi Katagiri
Release date(s) Japan:
March 4, 2000
Running time 51 minutes
Gross revenue ¥2,160,000,000

One Piece (ワンピース, Wan Pīsu?) is the first animated feature film of the franchise, starring Mayumi Tanaka as Monkey D. Luffy, Kazuya Nakai as Roronoa Zoro, Akemi Okamura as Nami, and Kappei Yamaguchi as Usopp. It premiered in Japan on March 4, 2000 and was released to DVD on January 21, 2001. The film was shown in a double bill with Digimon Adventure: Our War Game!. In their first week of showing, they made a second place in the Japanese box office, a third place during their second week, and two first places during their fourth and fifth weeks. In total, they earned 2,160,000,000 Japanese yen.

The legend of the Great Gold Pirate Wonan remains intact, years after his disappearance. Many pirates search for his mountain of gold hidden on a remote island. Among them are Captain El Drago and his men. By hunting down every member of Wonan's former crew, they eventually take possession of a map to that hidden island. On their way there, they meet and decide to rob the Straw Hat Pirates, who, still lacking a cook, are close to starvation. A short fight ensues, during which Luffy, Zoro, and Tobio, a boy who ran away from home to become part of Wonan's crew, are separated from the other Straw Hats and their ship, staying afloat on the shattered remains of what at some point was a boat. Following the scent of food, they quickly arrive at a floating oden bar, run by Tobio's grandfather, Ganzo. El Drago and his crew land on Wonan's island, where they encounter Usopp, who, to evade being killed, convinces them, that he is a professional treasure hunter, offers them his help, and using their map, starts leading them around. Meanwhile somewhere else on the island, Zoro and Luffy, chained together for trying to eat-and-run, get lost and attempt to get back to the shore. With the help of Nami, Usopp gets away from the enemy crew. The Straw Hats meet up and take a closer look at the treasure map. They conclude, that Wonan's treasure must be hidden on the island's only mountain and set out to climb it. On their way up, they meet Ganzo, who reveals to them, that he and Wonan had grown up like brothers, in the same village. On top of the mountain, they find an empty house, with a secret entry to a basement. El Drago and his men arrive and are beaten by Luffy and Zoro. Then the group climbs into the basement. There, Wonan's skeleton is sitting in an empty room, a message for his old friend Ganzo written on the walls. With no gold left to find on that island, the Straw Hats set sail, resuming course for the Grand Line.