This story is not like my usual reads, it is unlike anything I have read before. A whole new way of world than the one I know that made for quite an enjoyable read. The story flowed well and had me guessing at times what could happen next. A slow building romance that is mainly communicated through messages at various points of time. These messages are hidden that only either red or blue can find that have been left for each other even though they are on the opposites sides of the war. One is on the side of technology while the other is on the side of environment. This is a science fiction time travel masterpiece. I would recommend this book to others to read and while this is the first book I have read from this author I hope it will not be the last.