One Piece: Baron Omatsuri and the Secret Island_
"If you are a pirate among pirates, among pirates, among pirates, then gather your steadfast crew of nakama and set sail for our island."
The Straw Hats visit a recreational island, run by Baron Omatsuri, who asks them to complete a series of ordeals if they wish to stay on the island. Luffy accepts and the Straw Hats work together to complete them, but as the island's mysteries unfold, their lives and friendships are put to the test. It's up to Luffy to stop the Baron's plot and keep his crew together.
Updated Feb 16, 2026
WHERE TO WATCH
Animation Digital Network
2 countries
Netflix
1 country
Hulu
1 country
U-NEXT
1 country
Prime Video
1 country
Disney+
1 country
DROPTHE_ GOSSIP
Director
Mamoru Hosoda →
One Piece: Baron Omatsuri and the Secret Island was directed by Mamoru Hosoda.
Mamoru Hosoda →
Cast
Mayumi Tanaka →
Mayumi Tanaka stars as Monkey D. Luffy (voice) in One Piece: Baron Omatsuri and the Secret Island.
Mayumi Tanaka →
Year context
One Piece: Baron Omatsuri and the Secret Island was released 21 years ago in 2005.
One Piece: Baron Omatsuri and the Secret Island is a Action, Animation, Thriller film with a runtime of 1h 31m.
CAST (20)
Mayumi Tanaka
Monkey D. Luffy (voice)
Kazuya Nakai
Roronoa Zoro (voice)
Akemi Okamura
Nami (voice)
Kappei Yamaguchi
Usopp (voice)
Hiroaki Hirata
Sanji (voice)
Ikue Otani
Tony Tony Chopper (voice)
Yuriko Yamaguchi
Nico Robin (voice)
Akio Otsuka
Baron Omatsuri (voice)
Takeshi Kusao
Muchigoro (voice)
Takeshi Aono
Kerojii (voice)
Masaharu Sato
Keroshot (voice)
Joji Yanami
Kerodeek (voice)
Keiko Yamamoto
Keroko (voice)
Anzu Nagai
Daisy (voice)
Sosuke Ikematsu
DJ Gappa (voice)
Makiko Ohmoto
Rosa (voice)
Daisuke Sakaguchi
Rick (voice)
Misa Watanabe
Lily Carnation (voice)
Yoshito Yasuhara
Brief (voice)
SA
Shou Ayanokouji
Kotetsu (voice)
CREW
Director
BOX OFFICE
$10.5M
Revenue
STUDIOS (1)
DETAILS
FREQUENTLY ASKED QUESTIONS
What is One Piece: Baron Omatsuri and the Secret Island about?
The Straw Hats visit a recreational island, run by Baron Omatsuri, who asks them to complete a series of ordeals if they wish to stay on the island. Luffy accepts and the Straw Hats work together to complete them, but as the island's mysteries unfold, their lives and friendships are put to the test. It's up to Luffy to stop the Baron's plot and keep his crew together.
How long is One Piece: Baron Omatsuri and the Secret Island?
One Piece: Baron Omatsuri and the Secret Island has a runtime of 91 minutes (1h 31m).
Who directed One Piece: Baron Omatsuri and the Secret Island?
One Piece: Baron Omatsuri and the Secret Island was directed by Mamoru Hosoda.
Who stars in One Piece: Baron Omatsuri and the Secret Island?
The cast of One Piece: Baron Omatsuri and the Secret Island includes Mayumi Tanaka, Kazuya Nakai, Akemi Okamura, Kappei Yamaguchi, Hiroaki Hirata.
How much did One Piece: Baron Omatsuri and the Secret Island make at the box office?
One Piece: Baron Omatsuri and the Secret Island earned $10,494,545 worldwide at the box office.
What is the rating of One Piece: Baron Omatsuri and the Secret Island?
One Piece: Baron Omatsuri and the Secret Island has a rating of 7.2 out of 10 based on 238 votes on TMDB.
GENRES (4)
Action
Animation
Thriller
Comedy
KEYWORDS (3)
pirate
shounen
anime