Doraemon: Nobita's Great Battle of the Mermaid King (2010) Movie Information

Doraemon: Nobita's Great Battle of the Mermaid King (2010) Cover

Mermaid princess Sophia appears in Nobita's yard. Visiting her underwater home, the gang joins a mer-tribe battle and searches for a mythical sword. Doraemon uses one of his secret gadgets to create a virtual ocean for Nobita to play in, when suddenly, the mermaid princess Sophia, a descendent of the planet Aqua appears. Her people came to earth 5000 years ago, after being persecuted by the ruthless Kaigyozoku. At the mermaid palace, Doraemon and his friends learn about the mysterious mermaid legend and the "Mermaid Sword."

Movie Information

Japanese ドラえもん: のび太の人魚大海戦
Romaji Name Doraemon: Nobita no Ningyo Daikaisen
English Name Doraemon: Nobita's Great Battle of the Mermaid King
Director Kōzō Kusuba
Producer Shin-Ei Animation
Writer Fujiko F. Fujio & Yuichi Shinbo
Music by Kan Sawada
Studio Shin-Ei Animation
Distributor(s) Toho
Release Date 6 March 2010
Running time 99 minutes
Country / Language Japan / Japanese
Box Office $43.1M

Movie Poster

Doraemon: Nobita's Great Battle of the Mermaid King (2010) Poster


Doraemon: Nobita's Great Battle of the Mermaid King is the 30th installment of the Doraemon feature films. A special episode was aired called Nobita's Mermaid Legend.

Characters and Cast

Character Japanese Voice Artist
Doraemon Wasabi Mizuta
Nobita Nobi Megumi Ōhara
Shizuka Minamoto Yumi Kakazu
Takeshi 'Gian' Gouda Subaru Kimura
Suneo Honekawa Tomokazu Seki
Tamako Nobi Kotono Mitsuishi
Nobisuke Nobi Yasunori Matsumoto
Dorami Chiaki
Dekisugi Hidetoshi Shihoko Hagino
Sofia Rie Tanaka
Haribo Mayumi Iizuka
Dr Mejina Yoichi Nukumizu
Sakkana Kun Sakana
Commander Rosy Grub/Tragis Katsuhisa Houki
Mii-chan Maru Tamari
Policeman Hidenari Ugaki
Driver Naomi Kusumi
Ondine Miki Maya
Soldiers Daisuke Kishio, Takashi Nagasako, Yasuhiro Takato


Opening Song Yume wo Kanaete Doraemon
Ending Song Kaeru Basho by Thelma Aoyama
Other Song Tōi Umi Kara Kita Anata

Movie Story

Suneo is showing off again, this time about how he’s been going scuba diving and swimming with ocean life. Of course, Nobita is jealous as usual and asks Doraemon for help. Doraemon pulls out an ocean simulator that lets anyone wearing the goggles to actually simulate diving. They leave the machine pumping water for the night and then go around town scattering some fish food, ready to invite some real ocean life to take pictures with and brag about.

After a fun night out, the next morning they find a girl who turns out to be Princess Sofia of the Aquarians. She got lost through one of the portals Doraemon had set up but was amazed at the surface world. After a tour and meeting Nobita’s friends, she explains that her people migrated from Planet Aqua to Earth 5000 years ago – about the time when stories about mermaids first emerged on Earth. Now they live quietly in the deep seas. When she decides to return to the palace, Nobita and his friends join her with some help of Doraemon’s gadgets. On their way back, they are attacked and are mistaken as kidnappers. Shizuka manages to hide but she is abducted by the Aquarian’s enemy, the Kaiges who managed to track them down, determined to get their hands on the legendary sword. After Sofia clears up the misunderstanding, they have an audience with the queen Ordeen who tells them how their fight with the Kaige had made their Planet Aqua uninhabitable. A message arrives from the Kaige demanding they hand over the sword in exchange for Shizuka who was being held hostage. Unable to decipher the clue they had found, they didn’t know the whereabouts of the real sword so they decide to create a decoy. There was little time left before the effects of the underwater gun was going to expire. They rescue her just in time and a fight breaks out. As Sofia prays for help, the sword reveals itself and the Kaige’s leader Buikin obtains the power, making quick work of Sofia’s army.

After luring him out of the water, Sofia and the others manage to trap Buikin using Doraemon’s simulator. In the process, they find out the sword helps clear up polluted water and Sofia is happy they can return home to use it on their home planet. The heroes are welcomed back with cheers in the kingdom but they Nobita and his friends realize they’ve away for too long.

With that, they say farewell and take the time machine back to before they met Sofia, ready to return to their everyday lives and wondering if they will ever meet again.

Scenes from the Movie

Doraemon: Nobita's Great Battle of the Mermaid King (2010) Image 1
Doraemon: Nobita's Great Battle of the Mermaid King (2010) Image 2
Doraemon: Nobita's Great Battle of the Mermaid King (2010) Image 3
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