Locate a shifting background of adventure as humanity clashes over whether to repair their ruined planet or luxuriate within a less tainted past. In 2267, Earth has just begun to recover from world-wide ecological disasters. Minh is area of the era that first shifted regress to something easier to the surface of the Earth through the underground hells, to reclaim humanity’s ancestral habitat. She’s spent her entire life restoring river ecosystems, but recently the type of long-term restoration projects Minh functions on have already been stalled because of the invention of your time travel. When she gets the chance take a team to 2000 BC to survey the Tigris and Euphrates streams, she jumps at the chance to uncover the secrets from the shadowy think tank that controls period travel technology.