Set at the height of the Northern Ireland conflict, a crack team of marines returns from a particularly arduous tour for a few months of R & R and training back in the UK. Every tightly knit troop needs a strong commanding officer to act as the glue holding it together. The commanding officer of 7 Troop has recently been changed, throwing the troop into a world far beyond the expectations of military life. Lieutenant Ewan is a switched-on young officer with more than queen and country on his mind.
The troop's "old sweat", Chris - the most experienced soldier on the team - commands the highest respect and 7 Troop would follow him through the 'Gates of Hell'; themselves. Once Chris is drawn into Lt. Ewan's sinister plan, 7 Troop is quick to follow.
With the promise of great riches, the twenty-eightman team plans and executes the perfect crime, until one of their own shows his true colours, a truly sadistic psychopath bent on violence, and this will test even the most hardened marine'.