Four people just found a gateway to another dimension, but they forgot one problem... how to get back! Young science whizz Quinn Mallory accidentally discovers a "gateway" to parallel dimensions while attempting to create an Anti-Gravity device. Excited by his discovery he tests his "gateway" without knowing what he had created. "Sliding" through the wormhole he landed back in his basement…or so he thought. He thinks his discovery is a failure until much to his amazement he discovers that "his" world has changed. Green lights now mean stop, red lights mean go. Elvis and JFK are still alive and horror of horrors his mother is married to Jake the gardener! It's another dimension. It's at this point his "timer" pulls him back through the wormhole to his own world. He sets off again, but finds ends up unable to get back his original dimension. With a small group of friends, Quinn must continue "sliding" through random dimensions until they finally find the Earth they call home.
Arriving on a world where a killer virus is rampant, the sliders discover that Quinn's double is the first man infected with the disease, now wanted by the authorities.
Genius student Quinn Mallory discovers a strange portal while trying to create an anti-gravity device in his basement.