For all of Emma's life, she and Ted had constantly been moving from city to city. Since arriving in Sydney, Emma had secretly located and found her mother, whom she had never previously met. Max's classmate Olivia finds a photograph of Max at the age of four, building a sandcastle with another child. Olivia asks about this other child, and remarks that she looks like Emma. Max feels sure it couldn't be Emma, whom he has only recently met. Max and Emma begin planting Max's tree seedlings at railway stations and in public parks. Max begins to have a strange feeling that has known Emma for a long time. Meanwhile, a friendship develops between Olivia and Emma. It is through this friendship that Emma starts to find a real sense of belonging in the household. The children offer the remaining trees to local residents, offering to plant them in their gardens. Mango asks what the trees will say to each other when they grow up and see each other over the roofs of the houses. Emma replies, "They’ll say, I’ve been waiting for ages to grow up and meet you. Where have you been all my life?”, this comment making Max sense a spiritual connection between themselves and the trees. Max looks through his photos again, and realises that the other child in the photo is in fact Emma, as one photo also shows Ted. Max's mother explains that Emma had lived with their family for some time when she was young. Eventually, Ted and Emma leave the household to move to Brisbane. Emma leaves something for Max in her room: an old photo of the two of them playing in the sand. It is identical to Max's.