Lucas is a little boy who likes to do things in a topsy turvy way. On the day of his fifth birthday, he finds a golden conche shell on the beach, what happens next is an adventure that he will never forget. He will meet Buddy and Bubbles, dolphins that talk, visit the underwater land of Neptura and meet Nixie the queen of the mermaids. Nothing is as it seems in Neptrua because it's the land of topsy turvy, but to Lucas it's a magical place, a place...