This is the story of Richard, a normal person, and his distant descendant from the future, Matt! They travel through time to ancient Greece and have many adventures there. In the end, Matt says goodbye to Richard and has an uncertain future in his time and requests Richard to prevent Global Warming to help improve the Earth's climate.
Not bad for a first time writer. (I presume?) Time travel, lots of nonsensical mumbo jumbo associated with sci-fi, some history thrown in... Always a fun read.