A well-liked woman in a small town is murdered, and townsfolk suspect a slow-minded man. The sheriff calls the Rangers to help prevent a lynching. Walker and Trivette must find the real killer before the angry town hangs the innocent man.

High school athletes are being coaxed to take a hybrid steroid called Powerballs to enhance their sporting skills. However, the drug takes over their brain and makes them oblivious to danger, causing teens to die from it.

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.

A for-hire explosive expert is hurt in one of his own explosions. The Rangers learn he was hired for a local job, and they want to find the man who hired the Iceman. The Rangers ask Charlie Brooks to play the Iceman due to a resemblance.

Two orphans go to a foster home with a couple who plan to adopt them. The children hear the parents talking and misinterpret what they hear. They fear being sent back to the orphanage so they run away. While out, they witness a murder.

A 6-year-old boy is mortally wounded during a late-night shootout in a residential neighborhood between the Rangers and two criminals; Trivette was involved in the shootout when the boy became caught in the crossfire. Initial findings implicate a woefully remorseful Trivette, who is suspended as the whole incident is being investigated. As he suffers greatly, he must contend with an overzealous investigating officer who wants to convict Trivette and have him removed from the Rangers (the officer had been passed over in favor of Trivette when both were up for being named Ranger) and a careless TV news reporter who constantly and errantly states on the air that the boy was shot as the result of carelessness on Trivette's part. As Walker seeks to uncover the truth, he and Alex help comfort the parents of the boy and pray for a miracle.

Carlos is working undercover to get an elusive drug dealer known as El Vaquero. He's gained the confidence of his number two Johnny Primo. Walker wants them to bust Johnny and maybe he can lead them to El Vaquero. But Carlos wants to stay under, it seems that El Vaquero killed Carlos's brother, who was an addict/dealer who wanted to quit but died of an overdose. Carlos thinks El Vaquero had him killed. Walker says ok but Johnny learns Carlos is a cop and grabs him and beats him up to know what he has told.

An escaped convict embarks on a deadly pursuit to kill every person who was involved in his sentencing. His top target is the kind old judge who the convict intends to return the favor by executing.

A young truck driver refuses to transport illegal drugs for a corrupt sheriff. The sheriff places a bomb on the driver's truck; the young man survives and goes into hiding. The boy's mother asks the Rangers to look into the matter.

Trivette's brother Simon is in town with drug dealers, trying to arrange a big operation. The Rangers are determined to stop the organization. Simon is told he has to kill his brother.

The HOPE Center hosts a charity rodeo to raise money. During practice, a man sexually harasses a woman; Trivette rescues her, but the man is accidentally killed by his own hand. The dead man's father decides that Trivette must die.

Men dressed as Santa's rob the armored trucks picking up donations from Santa bell ringers. Gang members rob a church where former gang members attend, causing the church goers to get in contact with their gang again.

Trivette is giving a criminology lecture at the University. Afterwards, one of the students asks Trivette to help her prove that her father is innocent of a crime he was convicted of.

Just as Walker and Alex are about to go on their honeymoon, the assassin who was hired to kill Alex and whose partner Walker killed, sets out to get them. And he's determined to do it. Even if he has to bring down the plane they're on.

Walker, Trivette, Alex, Gage and Cooke go to another city to play baseball with the city's police department. Alex meets with the D.A. who is a friend to talk about a major drug bust they made. Later two cops are waiting for someone when three detectives come in and try to kill them. One of them is killed, the other gets away. He makes his way to the courthouse and the detectives chase him, he runs into the D.A.'s office and they shoot the D.A. Walker shows up and tells them to get out. He then talks to the cop who claims that he has proof that the three detectives are stealing drugs from their busts. Walker finds it hard to believe and sends Gage and Cooke to look into it and learn it might be true. Walker thinks that one of the city's high ranking cops might be working with the detectives.

The explosive conclusion of the Rangers' on-going search for the elusive and resourceful Chairman.

The end is near ... in a show told mostly in flashbacks, a wounded Walker ascends through a manufacturing plant, wounded and using his gun one bullet at a time on killers as he recounts the story of a visiting African businessman who collapses from an Ebola-like virus after infecting several people. The businessman, who has since died of the virus, was a pawn in an African diamond-smuggling ring. Now Walker has the diamonds and a whole cartel is in the building going after him. A "Dallas"-like twist ending keeps Walker going (this show and the one after it were doubled up on the same Saturday night after being postponed due to extremely low ratings).