Texas Ranger Jim Blawcyzk is on his way to what should be the easiest assignment he’s had in a long while - until Tom Foley, a fellow Ranger and a man Jim trusted as a friend and comrade, murders their commanding officer and puts two bullets into Jim. Now with Jim lying gravely wounded, it’s up to his long-time riding partner Smoky McCue, and Jim’s son Charlie and Charlie’s friend Ty Tremblay, both newly appointed to the Rangers, to track down the lawman turned killer.

The trail will lead them across the Rio Grande into Mexico, where the renegade Ranger has taken refuge. Unfortunately for the Rangers, Foley has powerful friends and allies in Coahuila, and they are determined to keep him safe from Texas law, at any cost.