Rick Nautilus is the youngest and coolest explorer and sea adventurer alive on the Seven Seas. Together with his friends Ava and Emilio he lives aboard his phantastic submarine Nautilus. They are set on course to an undiscovered island when they come across a mysterious bottle – with a message in it! It is a call for help, and a string attached to the bottle leads them down into the depths of the ocean …
What secrets and possible dangers await them down there? The three friends are eager to find out!
