Deep in the woods outside London, an ancient evil lies undisturbed for centuries, until now. In the middle of nowhere it was to be the perfect Stagknight--strippers, pranks, drugs, booze and paintball. But for the bridegroom Brian and his team of Weekend Warriors, Happy Valley Paintball Farm isn't all that happy. As the party heats up and tensions within the group simmer, the lads face off for a night game--blissfully unaware that a far greater foe is waiting for them in the dark.