Endgame theorises that, in the event of the end of the world, the 12 original lines of humanity must fight against each other to find the earth key.
All 12 line members are alerted to the start by 12 meteors that land on Earth. Endgame is a puzzle though. Weaved into this book is not only a puzzle for the characters, but also for the reader.
I really can't say anything more about the plot, but this book is fantastic.
On every level. From reading this book, you find out that the effort that James Frey and Nils Johnson Shelton have put into this book is enormous.