In the future, the last remaining humans discover a means of sending consciousness back through time. These ‘travelers’ assume the lives of seemingly random people in the 21st century in order to secretly save humanity from the natural and man-made disasters and harmful politics that resulted in the dystopian future they abandoned. The travelers assume the lives of people who are about to die. Despite research into their hosts’ lives, they find out that impersonating these people is more difficult than they could ever imagine. For them, keeping up pretenses will prove just as tough as their missions.