It was originally released on March 4, 2000 as part of the Spring 2000 Toei Anime Fair, alongside Digimon Adventure: Our War Game!.

While traveling to the treasure, El Drago's men rob the Straw Hat Pirates, who have run out of food and are close to starving.

Zoro dives into the sea to save Luffy, separating them from the rest of the Straw Hats, and finds Tobio, a small boy who was forced to work for El Drago.

Usopp convinces El Drago not to kill him by claiming to be a professional treasure hunter, and close friend of Woonan, and begins leading him around the island aimlessly.

El Drago is defeated, and in a secret room the group find Woonan's skeleton and a message left for Ganzo.

Before dying, Woonan realized that his treasure could not make him happy, and returned all the gold he stole, leaving nothing but his skeleton and the flag he showed Ganzo before their fight.

Ganzo decides to build a grave for Woonan and continue running his oden shop, while Nami manages to steal El Drago's treasure.

The film's original soundtrack was composed by Kouhei Tanaka, and was released as part of the album 'One Piece: Music And Song Collection' (ワンピース 歌と音楽集 / アニメ) (サウンドトラック) on March 18, 2000.

This album was later re-released as part of the compilation 'One Piece Eizo Ongaku Kanzenban' (ワンピース 映像音楽完全盤 / アニメサントラ) on January 31, 2007, with the racks re-ordered.

[15] Luke Baldock, of The Hollywood News, commented that "the animation doesn’t look as good as the show here", but was satisfied with the film's humor and action.