A young adventurer explores the mysterious lost continent of Atlantis. Petros, the young child of a fisherman finds a very interesting thing while he plays on the beach he discovers a message in a bottle. With the help of his Grandpa they quickly discover that they have got a very interesting piece of paper. Grandpa says "With this piece of paper we can find Atlantis" Atlantis is a sunken city Grandpa explains for centuries people are searching for Atlantis but never succeeded. Together they go on an adventure to find the sunken city.