Watney reluctantly agrees returns to Mars as the leader of an attempt to colonize Mars. Two years earlier a robotic crew and a couple of 3D printers were sent to build a habitat for the human colonist. Now the habitat has been built and is waiting for its human occupants to show up. After an few bumps early on, everything is running smoothly and the colony is growing. Then without any warning all communication with Earth stops. A small group returns to Earth only only to find a planet devastated by climate change and war. Now the colony on Mars must find a way to rebuild a world they once called home.