The family bonds are particularly strong as Christmas approaches and sentiments are mixed with each member of the family reflecting on the life they once had back in Boston - and a life in the natural world. Christina and Billy are concerned if St. Nicholas can never find their island home and the family improvise the making of gifts and preparations. For all that the situation seems tragically hopeless, David and Elizabeth rally the family and they celebrate the birth of Jesus Christ - and Christmas in their island home with the improvised tree and presents. Ernst gets the ship's sextant, and Joanna the old treasure map. Other members of the family exchange their home made gifts and decorate the tree house (and pet animals). Parsons and Ben, on their nearby island, hear the family singing carols. Ben is wistful, but Parsons is still bent on revenge. Over the ensuing days , the fort is damaged by a raging storm and David insists that everyone must help repair. Joanna is annoyed. She ...