Four people: a single mom, a junkie, a high school athlete, and a janitor with a cognitive disability, all of whom are supposed to die on the same day, have their bodies inhabited by TRAVELERS from the future (led by Will and Grace's Eric McCormack), sent here to prevent the eventual extinction of the human race. In addition to their missions, they also have the challenge of seamlessly integrating into their new hosts' lives without anyone finding out.
