
Season 1
The series centers around Nadia, a young girl of unknown origins, and Jean, a young French inventor. Early in the story, the two protagonists are chased by Grandis Granva, Sanson, and Hanson, a group of jewel thieves who pursue Nadia for the blue jeweled pendant she possesses. After being rescued by Captain Nemo and his submarine, the Super Sea Cruiser Nautilus, the jewel thieves and the young protagonists join forces and participate in the struggle against the Neo-Atlantean forces, who seek to dominate the world. In the process, Nadia and Jean save the world from violent domination by the Neo-Atlantean forces led by Gargoyle, explore worldly mysteries and the powers of the blue pendant, uncover Nadia's hidden family ties, and ultimately discover the secret origins of Nadia.
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Episodes (39)

Girl at the Eiffel Tower

The Little Fugitive

The Riddle of the Giant Sea Monsters

Nautilus, The Fantastic Submarine

Marie's Island

Infiltration of the Secret Base

The Tower of Babel

Mission to Rescue Nadia

Nemo's Secret

A Crowning Performance by the Gratan

New Recruits for the Nautilus

Grandis and Her First Love

Run, Marie, Run!

The Valley of Dinicthys

The Nautilus Faces Its Biggest Crisis

The Mystery of the Lost Continent

Jean's New Invention

Nautilus vs. Nautilus

Nemo's Best Friend

Jean Makes a Mistake

Farewell Nautilus

Electra the Traitor

Young Drifters

Lincoln Island

The First Kiss

King, the Lonely Lion

The Island of the Witch

The Floating Island

King vs. King

Labyrinth in the Earth

Farewell, Red Noah

Nadia's Love

King's Rescue

My Darling Nadia

The Secret of Blue Water

The New Nautilus

Emperor Neo

To the Sky
