Hector, a shy and full of complexes young boy, and Cun, a lonely and distant girl, must regain a series of objects from four ladies and an old lighthouse-keeper in the five active lighthouses in Menorca. Sailing round the island with a canoe, facing the dangers of the sea and a group of speculators, they will set out on a trip full of adventures which will bring them to discover themselves. A novel addressed to people who believe it is worth to run risks for a better world.