A crime lord named Caleb Hooks, who Walker helped put in prison several years ago, escapes from prison, bent on revenge against the Rangers because his brother had been shot and killed during a shootout, and he claims it was murder. He initiates his plan by having Alex and Trivette kidnapped, then placed in a huge tank full of freezing, running water. He then contacts Walker and begins playing cryptic games with him, in hopes of both luring him into a death trap of his own and stalling him in his efforts to rescue Alex and Trivette before they drown.

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 Trivette.

When Maisie Whitman's son dies unexpectedly, C.D. tries to determine if he was murdered. He notices that Maisie is having problems with her mind. Meanwhile, the Rangers try to track down an escaped convict.

In a law enforcement contest for shooting, strength, and endurance, Walker and Trivette find their matches in law officers from Germany. And a preacher's son owes money to a loan shark who tells him to steal money from his father's charity.

A young boy is upset that his father, who's a firefighter, never seems to be home. They're busy because a gang is torching homes of witnesses to their leader who is on trial for murder. The father is shot as he attempts to put a fire out.

Masked men kill members of a wealthy family and film the murders. They use the video to extort money from other wealthy families. Walker and Alex use the governor's plane to fly evidence to the court and it's shot down.

Walker and Alex survive the plane crash, but the killers track down where they landed. Search teams try to find them and must get to them before they're killed, and the court case is dismissed without evidence.

Walker and Trivette receive a message from terrorists, who threaten to blow up enough anthrax to kill one million people in Dallas if they don't receive $100,000,000 and the release of another terrorist from prison. It's a race against time as Walker and Trivette hunt for the bomb.

When a man named Lloyd Allen is willing to testify against his boss, Vince Termin, who is dangerous and killed another man who was going to testify against him. Walker sends Francis Gage and Sydney Cooke to get him but when they arrive his men are there, but they manage to get away. Walker and Trivette try to help them.

A Shaman transports Walker back 100 years to prove the innocence of a Comanche Indian. In the present, he must prove the innocence of another one, who is accused of murder.

Gage's sister is a reporter. She goes undercover to investigate a crime boss operating at a local bar. When she goes missing, Gage and Sydney go undercover to find her. Meanwhile, Walker and Alex go on a camping trip.

Loretta Lynn's daughters play themselves as a country singing group. The Lynn Sisters are kidnapped and forced to record their music for a bootleg music mongrel.

An undercover cop is killed by the crime boss he was investigating. An Elvis impersonator's deaf daughter saw the murder and is now in danger from the killer.

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. His father decides that Trivette must die.

Walker goes undercover in a Arkansas prison to expose a warden money making fights.

When Walker visits a school for his Kick Drugs program, he witnesses a young boy's suicide. He learns that his death was because of harassment he was getting from some schoolmates who were gang members. Walker then decides to spend some time at the school to look into it. Meanwhile, Gage and Cooke are trying to get a criminal.

An employee at a research facility realizes his company is making sarin nerve gas and plans to release it. He asks his brother, Danny, to help collect evidence for the police. They are caught; he is killed, and Danny is hit by a car.

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

A criminal whose operations Walker and the others have been foiling decides to take them out, so he has one of his men plant a bomb when they're all together. Walker sees him, discovers the bomb, and tries to get rid of it but it blows up in his face. At the hospital they learn that he's blind and the doctors are uncertain if it's permanent. Gage and Cooke try to get the criminal. Alex tries to help Walker cope but he's impossible. White Eagle shows up and tells him that he shouldn't worry if he can see again but to learn how rely on his other senses. And he does.

A young girl is shot when some men who committed a crime were shooting their way out. Her father is a former Ranger who Walker knows. And he sets out to find the one who shot her. Walker tries to caution him about what he is doing and gets him reinstated.

When a new weapon knows as a Thunderhawk is stolen, Walker tries to find it. What they don't know is that the man who was in charge of bringing it to the military is the thief. He's planning to sell it to some people who plan to use it for terrorism. But before he can it's stolen from him too.

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

Walker returns from Los Angeles with Eagleton, the paramilitary man who killed a Ranger and was planning something in Los Angeles. Walker turns him over to some other men and while in transit some men kill them and spring him. Walker tries to find him, knowing that he is planning something. Sammo Law, the Chinese cop in Los Angeles who helped Walker catch him, comes and has some information he got from his associates.

A Chinese diplomat who is a friend of Walker's is in the country to bring some students to his country. Later, when one of Chinese Embassy staff turns up dead, Walker and the others investigate. Gage has a run in with the diplomat's son who has diplomatic immunity. He is not pleased and thinks they should keep an eye on him. They later learn that the staff member may have been involved with drug smuggling. And that the diplomat's son is the one behind it, but they can't touch him because of his diplomatic immunity.

Dallas prepares for a ceremony to promote unity among the races. A white supremacist group goes there with the intent of placing bombs to destroy the unity. Gage takes a young boy under his wing to keep him from joining a gang.

Detective Steven Nimh infiltrated the organization of Billy Lo and has given Walker very useful information about his operations. Walker, feeling that Lo might be suspecting that he has a mole in his organization, wants Nimh to pull out. But he, sensing that something big is going down decides to stay in, sets him up and is killed. So Walker, with the information Nimh gave him, tries to get Lo. At the same time Nimh's father, a friend of Walker's comes and tries to help his grandson deal with his loss and some other problems.

Walker has been able to intercept all the drug shipments of the Ortega brothers. But when they discover that he has an informant in their midsts they kill the informant. In the meantime, they still continue to bring drugs in by having people sneak across the border by going to throw a ranch owned by Alex's friends. But when the husband catches them, he calls his foreman for help, but he kills him, as he apparently works for the Ortega brothers. Upon learning of what happened they make plans to buy the ranch.