When a friend of Walker's who is a Reverend dies, his son, Trent who's one of Walker's students who has been an instructor at the Army returns home. He is uncertain of what he's going to do. He doesn't exactly want to be like his father and would like to help people like Walker but doesn't want to carry a firearm. At the same time someone is killing cops and Walker is wondering why. And among his targets is Carlos, a friend of Trent's
Joey Prado, the professional kickboxer whom Walker trained and helped when he was in trouble, has just graduated from the police academy. And he gets an assignment which has him going undercover to get a guy he knew who is now a drug dealer, who has plans to give drugs away. And the guilt of deceiving the guy gets to Joey.
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 is taking some kids on a tour of the Texas Ranger Hall of Fame. When one of them asks him to tell them about a Ranger, Walker chooses to talk about Hayes Cooper. It begins in the old West, Cooper is a bounty hunter and after getting his latest bounty, he finds some settlers are being harassed by someone who wants their land. And Cooper helps them.
Walker continues to tell the story of Hayes Cooper. And he continues when Cooper upon seeing the family he befriended killed, he sets out to go after the ones he believes responsible for their deaths. After getting one of them, he meets a Texas Ranger who warns him about crossing the line and after saying that he gives Cooper a Texas Ranger badge which Cooper takes. After tracking down his quarries, he gets shot but is found by some Indians who nurse him back to health and gives him a moment to think.
Feeling that merely locking up criminals is not making a dent in the crime rate, Walker makes a proposal for new kind reformatory, before Senator Kay Hutchinson. The prison commissioner who feels that Walker's proposal will jeopardize his plan to get more funds to build more prisons opposes his plan. But the Senator gives Walker a shot. Deputy Commissioner Luther Dobbs is sent to evaluate Walker's program. So 10 young first time offenders arrive at what is called Camp Justice. Walker makes some headway with some of them. But when one of them gets into it with one of ...
A horse owner tries to bolster his horses' value by making sure they win all their races. But when another owner puts a crimp on his plans he kills the man and the trainer who was in his pocket. Walker investigates, and at the same time he tries to help his friend, who wants to put his horse Rainbow's End in the Texas Derby.