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), Quinn's mentor, Wade Welles (Sabrina Lloyd) and Rembrandt "Cryin' Man" Brown (Cleavant Derricks) The first three seasons were broadcast by Fox. The series moved to Sci-Fi Channel for its final two seasons.