The Argonauts and the Gold Coin

Alba arrives in Rodas, a small fishing town, to spend the summer at her aunt Helena's house. She thinks it will be a boring and lonely summer...she couldn't be more wrong. Soon she will make new and wonderful friends: Lucas, Sali, Olivia and Nil. Together they will make an extraordinary discovery: they will find a gold coin from Roman times. This discovery will lead them on the trail of a treasure.