The Unaired Pilot is the original version of "Cartman Gets an Anal Probe", with about four minutes of extra footage. While this version never aired on television, it was released onto DVD in 2003 via The Complete Second Season. It is probable this unaired version was completed sometime around late-1996.
Cartman is abducted by aliens, who give him an anal probe. The aliens also kidnap Ike when Kyle abandons him at the bus stop and he must get him back. Meanwhile, Stan has a date with Wendy.