In To Save the Sun, humans rule a vast empire. It is discovered that the Sun is dying. A lethargic entity, the empire arrives at the consensus that humanity will evacuate the Solar System and move to other solar systems in the empire. One woman, however, feels that saving the sun would be both a symbolic gesture worthy of humanity, and a way to get humanity moving towards a common goal, as well as developing new technology. In short, a way to drive change in a society which has become too comfortable with the status quo, and in which progress has become a distant concept. The sequel is simply a continuation of events, but the first book can be read as a standalone. Unfortunately, both books feel rather unfocused on both the central story and the central theme. The main characters are not really fleshed out the way they could be. Since I very much like the thematic concepts, I was rather disappointed. It is, however, still an adequate read.