In 2180, travel to neighbouring star systems has been mastered thanks to quantum teleportation using the 'entanglement' of sub-atomic matter; astronauts on earth can be duplicated on a remote world once the dupliport chamber has arrived there. In this way a variety of worlds can be explored, but what humanity discovers is both surprising and disturbing, enlightening and shocking. Each alternative to mankind that the astronauts find, sheds light on human shortcomings and potential while offering fresh perspectives of life on Earth. Meanwhile, at home, the lives of the astronauts and those in charge of the missions will never be the same again.