A group of convicts use a subterranean tunnel to get to a home near the prison, and one of them is an undercover agent whose allegiance may be compromised. A gang of vicious criminals escapes prison via an underground tunnel. The Breakout Kings find themselves cooperating with the FBI after learning one of the gang members is actually an undercover agent. When it starts to look like the undercover agent may have been turned, the pressure is on for the Kings to hunt them down and discover the truth. All the while, the team must struggle with the loss of one of their own.