Almost 900 years into the future, the aging Starship Destiny is nearing the end of its long voyage. On board is the only survivor of Earth, a young girl called Tamsin. Raised by Destine, her humanoid companion, she struggles to comprehend a past she was not part of and a future she finds difficult to accept. Surrounded by robots on board a sterile ship, Tamsin will discover that Destiny has many secrets and that Destine is not who she appears. Over three sprawling books, Tamsin unravels the past, piece by piece, while she comes to terms with her own destiny and the fate of all humanity.