As assistant to Mangkona�TMs most celebrated mapmaker, twelve-year-old Sai plays the part of a well-bred young lady with a glittering future. In reality, her father is a conman a�" and in a kingdom where the status of onea�TMs ancestors dictates their social position, the truth could ruin her. Sai seizes the chance to join an expedition to chart the southern seas, but she isna�TMt the only one aboard with secrets. When Sai learns that the ship might be heading for the fabled Sunderlands a�" a land of dragons, dangers, and riches beyond imagining a�" she must weigh the cost of her dreams. Vivid, suspenseful, and thought-provoking, this tale of identity and integrity is as beautiful and intricate as the maps of old.