Doraemon: Nobita and the Castle of the Undersea Devil

Doraemon: Nobita and the Castle of the Undersea Devil

Year: 1983

Runtime: 94 mins

Language: Japanese

Director: Tsutomu Shibayama

FantasyScience FictionFamilyAnimationAdventure

Nobita and his friends find themselves deep beneath the Pacific Ocean. Gian and Suneo commandeer Doraemon’s underwater vehicle and set out across the Atlantic in search of a fabled treasure ship. During the quest the protective environmental gun supplied by Doraemon begins to lose power, leaving the team exposed to the sea’s dangers. Their plight is finally eased when a group of friendly marine creatures rescue them.

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Timeline & Setting – Doraemon: Nobita and the Castle of the Undersea Devil (1983)

Explore the full timeline and setting of Doraemon: Nobita and the Castle of the Undersea Devil (1983). Follow every major event in chronological order and see how the environment shapes the story, characters, and dramatic tension.

Time period

Location

Mu Underwater Kingdom, Atlantis, Bermuda Triangle, Atlantic Ocean, Coastal area

The action shifts between the sunlit coast and the hidden depths of Mu, an underwater kingdom inhabited by sea people. Atlantis, a robotic rival civilization, lies deeper in the Bermuda Triangle and houses Poseidon, its main computer. The journey spans the Atlantic’s surface and its mysterious undersea corridors, with travelers moving via Doraemon's gadget-assisted methods.

🧭 Underwater realm 🌊 Bermuda Triangle 🏰 Undersea kingdoms 🚢 Ocean exploration

Last Updated: October 04, 2025 at 13:14

Main Characters – Doraemon: Nobita and the Castle of the Undersea Devil (1983)

Meet the key characters of Doraemon: Nobita and the Castle of the Undersea Devil (1983), with detailed profiles, motivations, and roles in the plot. Understand their emotional journeys and what they reveal about the film’s deeper themes.

Nobita Nobi (Noriko Ohara)

Nobita serves as the cautious, curious leader who questions unbelievable claims while remaining hopeful. He documents the strange sights—like the sea craft that attacked him—and keeps the group focused on finding their friends. His resilience and willingness to adapt help drive the rescue effort.

🧭 Curious 🧑‍🤝‍🧑 Determined 🧠 Problem-solver

Doraemon (Nobuyo Oyama)

Doraemon uses a toolbox of gadgets, including the transformative hat, to create safe passage through the undersea landscapes. He acts as a mentor and protector, coordinating the plan to escape Mu and later the peril at Poseidon’s castle. His courage under pressure keeps the group together.

🤖 Helpful 🧠 Gadget-driven 🛡️ Protector

Shizuka Minamoto (Michiko Nomura)

Shizuka demonstrates bravery and compassion, stepping into dangerous situations to keep the group safe. She volunteers to be captured to follow Poseidon’s trail, showing selflessness and a calm presence under threat. Her quick thinking helps the team navigate the castle’s defenses.

👧 Kind 🧭 Brave 🧡 Compassionate

Takeshi Goda (Gian) (Kazuya Tatekabe)

Gian is hot-headed and boisterous, often driving action with his bold personality. Despite clashes, his loyalty to friends emerges as he helps in the escape from Mu and later the defense of the team. His resilience grows as he faces serious danger.

💪 Loud 🥊 Hot-headed 🤝 Loyal

Suneo Honegawa (Kaneta Kimotsuki)

Suneo is clever and watchful, often providing strategic advantage but also getting into mischief. He participates in the escape and supports the team, learning to balance vanity with responsibility during the crisis.

💎 Cunning 🗺️ Show-off 👀 Observant

Last Updated: October 04, 2025 at 13:14

Major Themes – Doraemon: Nobita and the Castle of the Undersea Devil (1983)

Explore the central themes of Doraemon: Nobita and the Castle of the Undersea Devil (1983), from psychological, social, and emotional dimensions to philosophical messages. Understand what the film is really saying beneath the surface.

🪸 Adventure

The group embarks on an expedition beyond their normal camping trip, entering uncharted underwater realms and encountering new civilizations. They must navigate treacherous seas, strange technologies, and looming dangers as they seek Gian and Suneo and a legendary treasure ship. The voyage tests their resilience, teamwork, and willingness to take risks for friends.

🤝 Friendship

The story centers on how Nobita, Doraemon, Shizuka, Gian, and Suneo rely on one another to survive the perils of Mu and Atlantis. Conflicts arise, misunderstandings occur, yet their loyalty helps them overcome barriers. The group learns that trust and cooperation are essential when facing a larger, unfamiliar world. Bonds are strengthened through acts of sacrifice and mutual support.

🛡️ Courage

Characters confront powerful enemies, from sea guards to Poseidon, and endure near-fatal dangers to protect friends and prevent catastrophe. Doraemon’s gadgets are used to outsmart adversaries and navigate deadly defenses. Facing a potential volcano-triggered disaster, they choose to act bravely despite fear.

🧭 Discovery

The voyage reveals hidden civilizations, advanced underwater tech, and political tensions between Mu and Atlantis. The team uncovers the truth about the sea people saving Gian and Suneo, and learns that there are consequences when humans reveal secret worlds. The adventure becomes a journey of learning about ancient legends and modern technologies coexisting.

Last Updated: October 04, 2025 at 13:14

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Doraemon: Nobita and the Castle of the Undersea Devil Summary

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Doraemon: Nobita and the Castle of the Undersea Devil Summary

Doraemon: Nobita and the Castle of the Undersea Devil Timeline

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Doraemon: Nobita and the Castle of the Undersea Devil Timeline

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Doraemon: Nobita and the Castle of the Undersea Devil (1983) Plot Summary & Movie Recap

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Doraemon: Nobita and the Castle of the Undersea Devil (1983) Spoiler-Free Summary & Key Flow