The series follows a group of travelers as they use a wormhole to "slide" between different parallel universes. The main initial cast included Quinn Mallory (Jerry O'Connell), Professor Maximillian Arturo (John Rhys-Davies), Quinn's mentor; Wade Welles (Sabrina Lloyd) and Rembrandt "Cryin' Man" Brown (Cleavant Derricks) The first three seasons were broadcast by the Fox network. The series moved to Sci Fi Channel for its final two seasons.