This is based around 4 Children (Cartman, Stan, Kyle and Kenny)who get in to an R rated movie from Canada, this movie has very strong language and (in the words of Cartman) "warps their fragile little minds" inevitably they see the movie again and Cartman makes a $100 bet that Kenny can't light a fart inevitably killing him, their parents form a group called MAC (Mothers Against Canada) who believe Canada is to blame for the kids uses of foul language, resulting in a war between USA and Canada, and the execution of Terrence and Phillip (the people who made the movie)
During this Kenny is in hell and discoves the gay relationship between Satan and Saddam Hussain, and learns that if Terrence and Phillip are killed then Satan will rule the world.
This is also the first time you see Kenny without his hood, it won an MTV award for the song Uncle F***a in the year 2000 and in 199 won "best animated film", my favourite scene is 30 minutes in when Cartman sings the song "Kyle's Moms a B***h" and turns round to find her behind him
This film is very funny and has a rating of 15 due to language and sexual references, it is very funny and is really worth a watch.