Okja begins as a buddy flick – but ends up in the slaughterhouse

Korean director Bong Joon-ho works with British co-writer Jon Ronson on this tale of genetically engineered superpigs.

If Studio Ghibli, the Japanese animation studio responsible for Spirited Away, were to branch out into live action, the result might be something like Okja – at least in part. It’s the tale of a genetically engineered breed of waddling grey superpigs, not so much porcine in appearance as manatee or hippo-like, created by the twitchy, imperious CEO of a multinational corporation, Lucy Mirando (Tilda Swinton), in the hope of solving a global food shortage.

Each of these docile beasts is despatched to a different corner of the planet to be reared. The enormous Okja grows up in rural Korea, gambolling in the fields with her young companion, Mija (Ahn Seo-hyun).

Okja is no dumb animal – she saves the child from falling off a cliff by using a rope to improvise a sophisticated pulley system. She should be working in crisis management, not ending up on someone’s fork. But eventually the day comes when Mirando’s representatives arrive to claim their several thousand pounds of flesh.

The early scenes borrow the leisurely rhythms of Mija’s idyllic days with Okja; she snoozes on the beast’s vast belly, softly rising and falling in time with her pet’s breathing. Yet once she follows the kidnapped creature to Seoul, where they are taken in by a band of animal rights activists, the film lurches from one style to another. What begins as a tranquil buddy movie finishes up in the blood-soaked slaughterhouse where Okja is due to end her days; it’s as though My Neighbour Totoro had morphed into Fast Food Nation.

The film’s Korean director, Bong Joon-ho, and his British co-writer, Jon Ronson, present viewers with a transaction that reflects the ethical and ecological implications of the story.

We can have our heart-warming tale of the bond between human and animal, but only if we accept also those parts of the plot which demystify that relationship and take it to its industrialised extreme. It’s a bold strategy that has worked before for this film-maker – in The Host and Snowpiercer he used the genres of horror and action, respectively, to smuggle through political and environmental messages.

But Okja risks falling between two stools. Young children who might enjoy the first third (and can see Okja on Netflix the very day it is released in cinemas, easily bypassing the 15 certificate) would be alternately bored and traumatised by the rest of it. Conversely, adults will have an awful lot of whimsy to wade through before reaching the meat of the movie.

There are compensations. The film is sumptuously designed by Lee Ha-jun and Kevin Thompson, and crisply shot by Darius Khondji. Swinton, who played the villain in Snowpiercer as a grotesque northern schoolmarm with oversized gnashers, puts in the distorting dentures once again in Okja as both Lucy and her sister, Nancy, with whom she is locked in an irresolvable rivalry. Lucy is bleached (pink skin, platinum hair, white robes) to the point of invisibility, whereas Nancy is a harrumphing Penelope Keith type in a quilted jacket.

Other capable actors are undone by the unreasonable demands placed on them. Shirley Henderson, as Lucy’s assistant, has been directed to talk at comically high speed for want of any actual funny dialogue, and Paul Dano would be more plausible as a winsome animal rights activist if he weren’t leading the Animal Liberation Front. The group’s portrayal here as a group of touchy-feely flower children (“This is a non-lethal chokehold, OK?” one member says, as he disables a security guard) is laughable.

But no one comes out of Okja quite as badly as Jake Gyllenhaal in the role of Dr Johnny Wilcox, a wacky nature TV presenter who is like Steve Irwin trapped in Timmy Mallett’s body. The film is at its most wrong-headed in scenes where Dr Johnny, left alone with Okja, first forces her to mate with another superpig (a pointless episode that serves no plot function) and then tortures her.

It’s that risky trade-off again: enjoy the knockabout chase sequence in which Okja fires turds at her adversaries, and later you must endure the darker side of the same narrative. It will be a forgiving audience indeed that doesn’t recoil from this approach, which is too much stick and not enough carrot.