People living at a seashore town are frightened by reports of an unknown creature called “the sea devil”. Nobody knows what it is, but it’s really the son of doctor Salvator. The doctor performed surgery on his son and now young Ichtiander can live under water. This gives him certain advantages, but also creates a lot of problems.

A little girl Assol met a wizard and it has been foretold: “… it will be a fine sunny day when a beautiful ship under scarlet sail comes and the noble prince will take you away from here. He’ll take you to the world of your dreams, where you will be loved and happy.” The neighbours told jokes about her, children teased her, but she waited for her prince. She trusted in the miracles and waited. Arthur Gray’s rule was “if you can make a miracle, do it!”. And he made a miracle for the wonderful romantic girl.