France 1918, 78 feet underground is where our story begins for our characters and their introduction to the scene. Now, we have tasty visual effects happening, and this promises to be visually appealing. The realization of what they've gotten themselves into is coming to light, and it's rather unpleasant and beautifully hideous. This is really fun and intriguing sci-fi WWI, and it's just a blast to see the madness of it all unfolding. The film shows the lengths an aggressor will go to, and it's to validate their ideology. The worst part about the premise of the film is that the opposition isn't the only force willing to violate all sense of human decency.