There's a rift somewhere in the northern hemisphere, a huge gorge where monsters dwell. Two opposing towers overlook it, manned by two people who overlook an automated defense system (mines and turrets) to prevent the imprisoned things from leaking out.
Two snipers from both sides of the old iron curtain - Levi (Miles Teller) from the west and Drasa (Anya Taylor Joy) from the East - are hired to guard The Gorge for a year. It's all hush-hush; They have no idea where they are, they are only briefed by their predecessors (who don't know much more than they do), and the gorge itself is guarded by magical cloakers that somehow prevent spy satellites and google maps from seeing it. And if that sort of hand-waving bothers you, I'd recommend avoiding this movie like the plague because it is the sort of film that categorically does not sweat the details.
As the loneliness and boredom of their respective posts sets in, Drasa and Levi start making eyes at each other across the rift. Levi is a stick in the mud, especially compared to Drasa, who on her birthday starts blasting The Ramones' Blitzkrieg Pop; As they start communicating through the medium of binoculars and writing pads, the residents downstairs come to complain about the music - so the couple flirts both by writing messages to each other and by covering each other's backs with their sniping skills as human/plant zombie hybrids come swarming out of The Gorge.
This first part of the movie is all about Levi and Drasa's growing attraction and, despite some clunky dialog, it's probably the best part of the movie. As the months go by the long-distance starts to wear on the two; When Drasa is at a low point, Levi jury-rigs a rocket to function as a long-distance grappling hook and the couple have their first proper date and night together.
But this is nominally an action/horror film, so the script (by Zach Dean) soon finds a way to strand the lovers within the gorge. There it becomes an action/survival yarn as Levi and Drasa search for a way out and bring all its deeply stupid mysteries to light - all while being pursued by a bunch of CGI monsters.
It's a little bit Annihilation and a whole lot of the Resident Evil videogames, right down to the requisite ancient 8mm tape with a scientist explaining exactly what's going on and equipment that remains strangely functional after more than half a century of complete neglect. Hey, at least it functions as a pretty funny callback to the director's use of low-fi analog footage in his other films.
The action is decent but not very exciting; Director Scott Derrickson is more of a horror guy, and he and cinematographer Dan Laustsen (Guillermo Del Toro and Chad Stahelski's go-to DP) make the different environments of The Gorge look creepily alien, mostly thanks to some interesting, Fury-Road-like exaggerated colour grading and mutated plants and animal remains.
As for the shootouts, brawls and chases, there are a couple of interesting set pieces but the choreographies aren't all that great. Most of the monsters are essentially fast zombies (I was really annoyed by that, because they find the skeletons of much more interesting beasts) and the extensive use of CGI never achieves a good sense of physicality.
For better of for worse, The Gorge has a very modern Blockbuster mindset - think the latter Fast and Furiouses, or the Jurassic Worlds: The action is middling and it's proudly, very loudly dumb; I mean, this one's nowhere near as meat-headed as either of those, but the script does devolve into a similar morass of poorly though-out world-building and unlikely developments. It goes beyond the plot and setting - there are a ton of obvious mistakes that should have really been caught during production, like the fact that both Drasa and Levi are using assault rifles with regular sights to snipe across huge distances; Anyone who's logged at least a little time on any military shooter would call shenanigans. Maybe I'm overestimating the amount of people who'd notice that, but given the movie's videogame feel I suspect it's not insubstantial. And the film is full of this sort of thing.
Fortunately, the romance is solid, and it ultimately proves more central to the movie than the action beats. I remain sceptic about Miles Teller, who I find deeply uncharismatic and plays a bit of a sadsack here (his first message to Drasa is 'we're not allowed to fraternise' or something like that). Anya Taylor-Joy, however, more than makes up for him; She's no Manic Pixie Dream Girl, but it's the same sort of dynamic where she puts in all the personality and sense of fun.
Their relationship makes the movie - it's nowhere close to, say, Before The Sunset, but it's easy to root for these two. It gives the film some stakes, and us a reason to overlook the rote action and all the idiocy.
