Clockwork Island Adventure
Kanji ねじまき島の冒険
Rōmaji Nejimaki-shima no Bōken
Directed by Atsuji Shimizu
Written by Hiroshi Hashimoto
Music by Kohei Tanaka
Editing by Shinichi Fukumitsu
Release date(s) Japan:
March 3, 2001
Running time 55 minutes
Gross revenue ¥3,000,000,000

Clockwork Island Adventure (ねじまき島の冒険, Nejimaki-shima no Bōken?) is the second animated feature film of the franchise and the first to additionally star Hiroaki Hirata as Sanji. It premiered in Japan on March 3, 2001 and was released to DVD on October 21, 2001. The film was shown in a double bill with Digimon Adventure 02: Diaboromon Strikes Back. In total, they earned 3,000,000,000 Japanese yen.[5] The film was show along with a six-minute featurette short named Django's Dance Carnival (ジャンゴのダンスカーニバル, Jango no Dansu Kānibaru?).

While the Straw Hats enjoy a warm day at the beach, their ship with all their equipment and weapons is stolen. They can do nothing but watch, as it disappears into the distance. A week later, dressed in cloth from a rental store for wedding ceremonies and riding a one-person paddle boat they set out to go after their lost belongings. At sea, they encounter the boy Akizu and the young man Borodo. The two call themselves the Thief Brothers and claim to be after a well known treasure, called the Diamond Clock from Clockwork Island. Actually, they are the ones who stole the Straw Hats ship and brought it to Clockwork Island to make the Straw Hats fight the Trump Siblings. The Trump Siblings are another pirate crew who occupied Clockwork Island for years and forced its inhabitants to build weapons. A number of ships bearing the mark of the Trump Siblings appear and a short fight ensues, during which the Thief Brothers' ship is destroyed and Nami abducted. Using mere pieces of wood to stay afloat and an improvised sail for propulsion, the group manages to reach the foot of Clockwork Island. A long, circular staircase, laced with deadly traps, leads up to the actual island. There, Nami makes the acquaintance ofthe Trump Siblings' captain, Bear King. He takes a liking to her and decides to make her his bride. Eventually the Thief Brothers and the remaining Straw Hats make it to the end of the stairway and onto the main island. A beautiful landscape appears in front of them, but the island's citizens are in no mood to cherish it. Not knowing that Akizu is their son, a pair of them tells the group of the island's past. Then the heroes go stormingthe Trump Siblings' stronghold, build around the island's key, which holds the island together. One after another, the Straw Hats get picked off and captured, until only Luffy remains. Once he reaches the strongholds top and frees his crew, themovie climaxes in an all out battle, during which the Trump Siblings are defeated and the island's key is destroyed. Clockwork Island crashes down into the ocean, but Akizu reunites with his family and the Straw Hats reclaim their ship.