74 year old Rowan Bjornsted, a professor of twentieth century history, writes her memoirs in 2340 with instructions they be published in 2440. She is confident they will be of interest since they reveal the hidden side of the epoch creating Sirius star probe launched in 2151. The path of these memoirs to our own times is most unusual. They come to us from the planet of Sapphire and were sent from the year 3750.