After a hundred days in Porcupine Creek, the miners have dug themselves into a deep financial hole. The claim's owner wants to be paid and brings in a veteran outsider to turn the operation around, leading to high tension around the claim.

With the arctic winter looming, the crew races against the clock. Rain and thawing snow flood the mine and Jack puts his life on the line as the glory hole caves in around the massive 100,000 pound excavator.