Reunite, four old pals - Scully, Doc, Robbie, and Donald - in an allegedly haunted and isolated shelter. All this amid the creaking bonds of an alliance built in the amber whisky haze of their misspent youth. Throw in the ashes of a departed friend and give them a simple mission, then anything could happen and frequently does.
The Key-Stone of the Bridge is a very Scottish tale, full of chills, thrills, mystery and suspense, as in beautiful and unusually calm winter weather, the four men complete their task.
Then well, things start to get a little strange.
The mountains are usually deserted in winter but two visitors appear seeking shelter and tell of meeting a mystery hiker. That night has some strange goings on but they blame that on the whisky. Then when there is no sign of the mystery hiker, the four decide to look for him or his body. But the weather deteriorates, their misfortune grows and they return to find their sanctuary gone.
Will they struggle through to reach civilization and finally discover the truth about their guests and the mystery hiker?