As the Nautilus readies for launch, Prince Dakkar chooses his motto, flag and nom de guerre. (A short prequel.).

Hogan investigates another unit's failed mission and fears the Underground might be compromised. Further complicating matters, London sends in a new team that rejects cooperation while Hogan is stuck with an unwanted new resident. Is there enough room in District XIII for two espionage units? Can he trust Saunders? If he cannot uncover the traitor, the end result is a firing squad.

While not in the habit of picking up castaways like driftwood to add to his collection, Nemo reluctantly accepts a new passenger when his first officer is distressed to find a drowning woman in the sea after an encounter with a warship. Introduction by Professor Pierre Aronnax. Inspired by Jules Verne and his amazing adventures. (Scene breaks still not formatting correctly, sorry).