When some of the crew try to leave the Nautilus and swim to shore, they are discovered by the company's emissaries and forced back. Now the Nautilus must go out to sea to avoid capture. An unexpected encounter with a whaler slows them down and just as they are almost there they are forced below the surface for a game of cat and mouse.

Captain Nemo and his starving crew go ashore on a seemingly deserted island in search of food. When Blaster goes missing, Nemo and Humility embark on a daring rescue mission but soon encounter a giant electric eel.