Ever wondered what Trey Parker and Matt Stone did before South Park? Here’s a surprise – they went to college, where they wrote, directed, produced, co-scored and acted in a musical about cannibalism. This is it.

How’s your American history? It’s certainly never dull – full of wars, insurrections, and also a good deal of cannibalism – historical and contemporary. Probably the most famous incident is the Donner Party, a group of families who became snowbound in the Sierra Nevada over winter 1846-47, and famously turned to cannibalism to survive. Also up there in the mythology is the story of the famous typo, Alferd Packer, a prospector and self-proclaimed wilderness guide, who confessed to cannibalism during the harsh winter of 1874. Packer and five other men had attempted to travel across the San Juan Mountains of Colorado through the bitter winter snow, and Packer was the only one to arrive, some two months later, at the Los Pinós Indian Agency, near Saguache, Colorado. He first claimed the other men had abandoned him, then changed his story to tell of shared cannibalism of the men who had died of the cold, but was eventually charged with murder.

Incidentally, in case you’re wondering, his name was probably Alfred, but according to some sources, he changed it to Alferd after a mix up with a tattoo. Don’t know if that’s true, but just think of Jame Gumb in Silence of the Lambs, who refused to correct his birth certificate by adding an S to his first name. The author of that book, the meticulous researcher Thomas Harris, may have been having a wink at Alferd with that one.

According to a book on Packer, the judge at his trial sentenced him to death, saying:

Stand up yah voracious man-eatin’ sonofabitch and receive yir sintince. When yah came to Hinsdale County, there was siven Dimmycrats. But you, yah et five of ’em, goddam yah. I sintince yah t’ be hanged by th’ neck ontil yer dead, dead, dead, as a warnin’ ag’in reducin’ th’ Dimmycratic populayshun of this county. Packer, you Republican cannibal, I would sintince ya ta hell but the statutes forbid it.

Packer was not hanged, due to a legal technicality – he was sentenced under state law, but Colorado was not a state at the time of the cannibalism. Antonia Bird’s film Ravenous was also partly based on Packer.

That is pretty much the story that Trey Parker tells, using the names, dates and versions of the events that happened, and even in musical form, he tells it rather more accurately than an earlier biopic called The Legend of Alfred Packer (1980); also a lot more accurately than a later film called Devoured: The Legend of Alferd Packer (2005), which offered audiences the ghost of Alferd eating people in the modern day. Parker and Stone add lots of humour and gore and some very impressive and catchy songs, all written by, and mostly sung by, Trey Parker. Parker and Stone are masters of irony, and it is laid on thick, starting with the card at the beginning saying that the film was originally released in 1954 (some 15 years before Parker and Stone were born) but was eclipsed by the release of Oklahoma. The card goes on to claim that the violence has been edited out, and they follow this with a scene showing Packer killing the other members of his group by biting their necks and tearing off their arms.

The film moves between Packer’s trial (the bloody scene at the start is the prosecution lawyer re-enacting the alleged crime) and Packer’s description of the actual events, complete with dance routines and love songs to his horse, Liane.

The group who persuade Packer to be their guide are totally unprepared for the march from Utah to the Colorado gold fields over the snowbound Rockies, and are warned not to proceed into a big storm by a tribe of Indians, played by Japanese foreign exchange students, who speak Japanese, and even carry Samurai swords.

In a nice bit of cannibal intertextuality (Homer’s Odyssey), they try to kill a sheep belonging to a one-eyed cyclops (actually a Confederate soldier who lost his eye in the civil war). Early shades of South Park, as the cyclops squirts pus from his missing eye.

Sitting around the campfire, starving, they recall the story of the Donner party, and that gives them an idea. Yeah, they eat the guy who was an incurable optimist, who they shot for wanting to build a snowman. Look, it makes sense at the time. They even discuss not exactly the ethics of cannibalism, but at least the aesthetics – they won’t eat the dead guy’s butt, and Packer (Parker) is sick at what part Humphrey (Stone) chooses to eat.

There’s a ballet dream with Alfred dreaming of a reunion with Lianne (the horse), who has run away with a gang of trappers. Yeah, you’ll have to see it.

But the snow has them trapped, and they run out of food, and now the discussion is not which parts of a corpse to eat, but which member of the team should be sacrificed for the next meal. There is a hugely extravagant massacre, following which Packer waits out the winter, but now with plenty of meat, and then heads into town with his story of losing the rest of his party. That doesn’t wash, particularly when the well chewed bodies are found.

There’s a bar fight, pretty much de rigueur in Westerns, and Packer escapes to Wyoming, which he says is worse than being torn apart by the furious townspeople. Eventually he is arrested and brought back to Colorado. During his trial, there is a love interest, Polly (Toddy Walters), who interviews Packer through the bars of his cell in a scene that kept reminding me of Clarice Starling interviewing Hannibal Lecter in Silence of the Lambs, which had swept the Oscars in 1992, the year before this was made. She becomes convinced of his innocence and – well, it’s complicated. But the film is well worth your 100 minutes, just to see what Parker and Stone could do with real people instead of simulated cut-outs.

The film had mixed reviews, with some of the reviewers not knowing what to make of it. The critic score on Rotten Tomatoes is only 65%, but the audience score is 82%. The critic from Empire said: “there’s an air of genial enthusiasm, tempered by sick humour, that is surprisingly engaging”.

The tagline for the film is:

“In the tradition of Friday the 13th Part 2… and Oklahoma… comes the first intelligent movie about cannibalism!”

Parker and Stone are not shy about their fascination with cannibalism, for example, check out the South Park episode “Scott Tenorman Must Die”, in which Cartman takes revenge on a boy by killing the boy’s parents, and cooking and feeding them to him.

For a movie made by a couple of students at the University of Colorado, this is very impressive. It’s well made, the cast is great and the music is hard to get out of your head afterwards. I guess not so surprising, when we consider that four years later, in 1997, Parker and Stone launched South Park, which has been running ever since with over 300 episodes shown so far, and more seasons booked until at least 2022.

Modern geniuses.