A group of British soldiers from Company Y reach the most forward German trench on a foggy night in 1917, only to capture a German prisoner who warns them of an evil presence driving the soldiers to kill each other.

Deathwatch
During World War I, a group of British soldiers find themselves stranded and alone in a vast German trench system, only to discover a terrifying threat that lurks in the shadows, far more sinister than the enemy they're fighting against.