Episode 1
Aired Apr 13, 1990
The Young Girl of the Tour Eiffel
While visiting Paris, Jean meets a young African girl who is being pursued.
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Episode 2
Aired Apr 20, 1990
The Little Fugitives
Jean goes on a trip with Nadia to discover her past.
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Episode 3
Aired Apr 27, 1990
The Riddle of the Giant Sea Monsters
Jean and Nadia's plane crashes and they are saved by a battleship on a mission to kill a mysterious monster.
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Episode 4
Aired May 4, 1990
Nautilus, The Fantastic Submarine
Jean and Nadia arrive on an island controlled by the Gargoyle Army and meet Marie.
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Episode 5
Aired May 4, 1990
Marie's Island
Nadia and Jean come up with a plan to escape the island.
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Episode 6
Aired May 18, 1990
The Fortress on the Solitary Island
After their friend Marie gets abducted by invaders, Jean and Nadia infiltrate a secret base in the center of the island to try and rescue her; they discover the base's ownership by an organization who call themselves Neo Atlantis.
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Episode 7
Aired May 25, 1990
The Tower of Babel
During a rescue attempt, Nadia is kidnapped.
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Episode 8
Aired Jun 1, 1990
Nadia's Rescue
Grandis, Sanson, Hanson and Jean team up to rescue Nadia and her friends.
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Episode 9
Aired Jun 8, 1990
Nemo's Secret
After escaping Gargoyle's island, Nadia and friends are taken aboard the Nautilus and Nadia has trouble trusting her former enemies.
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Episode 10
Aired Jun 15, 1990
Gratan in Action
The Nautilus is caught in a mine field in an underwater cavern and Sanson, Hanson and Jean try to remove the mines.
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Episode 11
Aired Jun 22, 1990
A New Student on the Nautilus
Sanson, Hanson and Grandis become official crew members of the Nautilus.
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Episode 12
Aired Jul 6, 1990
Grandis' First Love
Nadia tries to please Jean by dressing up for him, but he is too busy to notice.
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Episode 13
Aired Jul 13, 1990
Run, Marie, Run!
Nadia is angry and dismissive of Jean's friendly offers as she goes to extremes to preach her stand on animal rights.
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Episode 14
Aired Jul 20, 1990
The Valley of Dinictus
Marie and Nadia both fall ill, and the Nautilus sets sail for Dinicthys to find the cure.
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Episode 15
Aired Jul 27, 1990
Nautilus' Biggest Crisis
The Nautilus is trapped by Gargoyle, which claims the life of a new friend of Jean and Nadia's.
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Episode 16
Aired Aug 24, 1990
The Mystery of the Island That Vanished
The conflict caused by the Blue Water haunts Nadia; the Nautilus heads to an underwater ruin to lay some of its crew members to rest, but as the crew pay their respects, Jean spots something.
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Episode 17
Aired Aug 31, 1990
Jean's New Invention
Jean tries to prove his worthiness when Nadia asks him to build another aircraft.
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Episode 18
Aired Sep 7, 1990
Nautilus vs. Nautilus
The Nautilus sets sail for Antarctica and the crew has a run in with a nasty shellfish.
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Episode 19
Aired Sep 14, 1990
Nemo's Close Friend
Nemo introduces Nadia and Jean to his best friend, a talking whale named Irion.
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Episode 20
Aired Sep 21, 1990
Jean's Failures
Jean's latest invention goes wrong and puts the Nautilus in serious trouble.
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Episode 21
Aired Oct 26, 1990
Goodbye Nautilus
The Nautilus is cornered by Gargoyle's battleship.
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Episode 22
Aired Nov 2, 1990
Electra's Betrayal
The children leave via the Captain's cabin; Electra draws a pistol on the captain.
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Episode 23
Aired Nov 9, 1990
Little Castaways
The kids are shipwrecked on a deserted island and must learn how to survive.
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Episode 24
Aired Nov 16, 1990
Lincoln Island
Nadia runs off but returns to steal food when she realizes that she can't survive on her own.
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Episode 25
Aired Nov 30, 1990
First Kiss
Jean must use meat in the morning omelet, making Nadia very displeased.
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Episode 26
Aired Dec 7, 1990
King's on his Own
Nadia shows a newfound gratitude toward Jean, which unsettles King enough to run away; Jean and everyone goes to look for King, and when she accidentally falls into a ravine, Jean discovers a mineral vein.
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Episode 27
Aired Dec 14, 1990
Island of the Witch
A typhoon strikes Lincoln Island and a mysterious floating island drifts near.
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Episode 28
Aired Dec 21, 1990
The Floating Island
The witch and assistants that Ayerton spoke of turned out to be Grandis, Sanson, and Hanson. Again united, our pals set up camp to live on the floating island.
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Episode 29
Aired Jan 11, 1991
King vs. King
Sanson and Hanson have a race with robots.
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Episode 30
Aired Jan 25, 1991
The Underground Labyrinth
Nadia vanishes after she and Jean visit a mechanical cavern on the island.
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Episode 31
Aired Feb 1, 1991
Goodbye Red Noah
Nadia faces an entity who tells her that their island home is a spaceship.
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Episode 32
Aired Feb 8, 1991
Nadia's Lover
The group lands in an African tribal village where a young warrior rescues them from death.
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Episode 33
Aired Feb 15, 1991
A Rescue Operation for King
King is kidnapped by Grandis's ex-fiancée.
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Episode 34
Aired Feb 22, 1991
Love to Nadia
Nadia is ashamed of how she acted and seeks Jean's attention.
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Episode 35
Aired Mar 1, 1991
The Secret of Blue Water
Nadia finally arrives at her lost homeland of Tartessos, where she reveals her deepest secrets.
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Episode 36
Aired Mar 8, 1991
The All-Purpose Battleship, New Nautilus
Gargoyle's battleships appear and Nadia surrenders herself to protect the others.
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Episode 37
Aired Mar 29, 1991
Emperor Neo
Gargoyle takes Nadia before the leader of Neo-Atlantis; Nemo and the others plan to fight Gargoyle.
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Episode 38
Aired Apr 5, 1991
...To Space
The New Nautilus and Gargoyle battle.
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Episode 39
Aired Apr 12, 1991
Inheritor of the Stars
The pieces fall into place for the final stage of Jean and Nadia's journey, Nemo and Gargoyle's feud and the secret of Nadia's Blue Water pendant.
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