When the king of Belvedere exiled the captain of the sea rose for having an affair with his daughter, he made a deal with her that if she could find and bring back the lost treasure of Solvieg in two years time, then the captain can have her beloved princess. What is so dangerous about the sunken kingdom of Solvieg that the king is able to make a deal with the captain for his own daughter? What will happen the the captain and her crew when they meet these mysterious dangers?