Who can kill a child?

Tom and Evelyn are an English couple who travel to a Spanish coastal town to enjoy a belated honeymoon. However, when they arrive, they are disappointed: the place is too bustling for the peaceful vacation they had planned. They decide to rent a boat to visit a small island where Tom had been when he was younger. They will be very surprised when they discover that the only inhabitants of the island are children, children who, encouraged by a mysterious force, rebel against the adults.