Jack Burber, Mike’s former drill sergeant is killed, and Mike and one of his Army buddies travel to Colorado and begin to investigate. He follows leads that the soldier may have been involved in an underground fight club that employs, and ultimately exploits military veterans.

They discover that Jack was part of this fight club, which spurs Mike into joining the club to find out what happened. Mike discovers the tape that contains footage of Burber’s last fight, and ultimately contains the evidence that Burber was murdered, and now has to find a way to exfiltrate out of the club.