Amidst the bloody trenches and unrelenting carnage of World War I's Western Front, two soldiers - Chris Lambert and Deepak Shrestha - cling to life and what little sanity remains. For Chris, a young Irishman, his sole motivation is to survive the hell around him and return home to his village sweetheart, Jane, with hopes of a simple but fulfilling life .

Deepak, a Nepali mercenary in the British Army, fights not just for survival but to provide for his wife and children back home. As the chaos of war rages, an unlikely friendship blossoms between the two men. Deepak, intrigued by Chris's singleminded devotion to Jane, even ponders introducing him to his cousin Zebba in a bid to reshape his friend's romantic outlook.

However, as they bear witness to unfathomable suffering in the aptly named "charnel house" of the frontlines, a stark question looms: If they somehow defy the odds and make it home alive, what will be left of the world they once knew? Charnel House is a gritty, poignant exploration of the psychological strain of combat, the mortal risks of love in wartime, and the enduring hope that drives humanity's will to survive against all odds.