Three people set out to research a large unknown sea animal that turns out to be an advanced submarine roaming the ocean. The three find the vessel and are taken aboard but are not allowed off since the captain does not want to be discovered. The three manage to escape after the captain becomes despondent and allows the craft to be caught in a whirlpool.

This audio classic novel has been carefully abridged and adapted into 10 short, easy-to-understand chapters. This format enables listeners of all ages and English language abilities to understand and enjoy the story. Composition includes original custom background music. This adventure tale is appropriate for children and adults.