In 1787 Lieutenant Daniel Rooke sets sail from Portsmouth with the First Fleet and its cargo of convicts, destined for New South Wales. As a young officer and a man of science, the shy and quiet Rooke is full of anticipation about the natural wonders he might discover in this strange land on the other side of the world. After the fleet arrives in Port Jackson, Rooke sets up camp on a rocky and isolated point, and starts his work of astronomy and navigation. It's not too long before some of the Aboriginal people who live around the harbour pay him a visit. One of them, a girl named Tagaran, starts to teach him her own language. But her lessons and their friendship are interrupted when Rooke is given an order that will change his life forever.