Plot Summary:An undercover agent is killed by Jack Garrett, the man she was working on. Walker sends an informant to get Garrett to incriminate himself but before he could someone tries to kill Garrett. Walker stops him and discovers that he's the brother of the agent who was killed. He refuses to cooperate, insisting that this is between him and Garrett. Later he escapes with help from his brother and sister and tries to get Garrett. Walker tries to stop them.
Walker, a martial artist, and his partner Trivette are Texas Rangers. They make it their business to battle crime in Dallas and all around the State of Texas.