AllMovie

Arriving in an eerily deserted San Francisco, the Sliders come across a tattered, half-mad Quinn lookalike (played by Jerry O'Connell, of course) who holds himself responsible for the end of Mankind. Actually, Mankind is still alive, but has been transferred en masse to a parallel world--resulting in a devastating population explosion, with far too many people (a "double" for every man, woman, and child) and far too few resources. It is up to the Sliders to restore the proper population balance before time (and space) runs out for untold billions of innocent humans.