 Firefly consists of a two-hour pilot and thirteen one-hour episodes (with commercials). The series originally premiered in the United States on Fox in September 2002. The episodes were aired out of the intended order. Although Whedon had designed the show to run for seven years, low ratings resulted in cancellation by Fox in December 2002 after only 11 of the 14 completed episodes had aired in the United States. The three episodes unaired by Fox eventually debuted in 2003 on the Sci Fi Channel in the United Kingdom. Prior to cancellation, some fans, worried about low ratings, formed the Firefly Immediate Assistance campaign whose goal was to support the production of the show by sending in postcards to Fox. After it was canceled, the campaign worked on getting another network such as UPN to pick up the series. The campaign was unsuccessful in securing the show's continuation.
