During a bank robbery in Dallas, Walker's partner is killed. Trying to solve this case, Walker finds out that this raid could have been only a test for a much bigger goal: simultaneously robbing four banks lying next to each other. No one believes him. After a bomb explodes in a far away bank, which has just gotten a valuable load, everyone goes there. When the actual raid starts Walker must face the gang alone.
After he robbed a bank Roy accidentally gets arrested because of a minor offense, but has to be freed after a short time. Walker and Trivette stay close on his heels but they are not the only ones. The bounty hunter Maxwell is also behind Roy. When Roy is (unprovable) killed by Maxwell, Walker and Trivette follow Maxwell, who is now behind Roy's partner Ned - who has the stolen money - and doesn't stop at nothing to get the money.
Trivette goes undercover into jail to infiltrate and destroy a drug ring. During a hurricane the transport crashes; the prisoners can escape and are hiding with hostages in a remote hotel. Among the fugitives: Trivette. When the transport is overdue Walker starts searching and lands up in the hotel where he goes for the prisoners one by one with the help of a handicapped person.
Using a psychic to help locate a kidnapped 8-year-old earns Trivette ridicule from his fellow rangers.
The Japanese mob is kicking up some trouble in Houston. Unfortunately for them, they decide to kidnap the wrong kid. The cute little daughter of a wealthy Texas power broker is home from a boarding school for some R&R and a little rodeo fun, when - on the drive home from the airport - she's violently snatched from her limo and two bodyguards. During the girl's previous year at the rodeo, she became one of Ranger Walker's many little buddies and proteges. So the bad guys have no idea what kind of bad news they've brought to themselves!
A helicopter comes in and the man inside kills the Judge in front of Alex and Walker just before he can tell them what he has discovered Fortunately Walker jumps into the helicopter and pulls the killer out with him. The killer, whose name is Sonny, reveals that a prominent businessman named DL Dade ordered the hit and also reveals that he is an underworld figure. With Sonny's help, Walker and Trivette begin to take down Dade's illegal operations.
An escaped psychopathic prisoner named Max Kale goes on a spree, eager to kill people who helped put him away in prison—a list of people including Walker, Alex, a doctor named Jane Pine, a judge named Hollister, Max's ex-wife Angela, and the neighbors from the street where Max was raised. Now Walker must do whatever it takes to protect the people and put an end to Kale's rampage.
Walker and Trivette investigation of the murder of an assistant high school football coach leads to their discovery of a blackmail plot towards the team caused by an illegal high-stakes gambling ring and they must end it before the state tournament game the high school team had been preparing for starts.
For years Walker has believed that the man who murdered his parents at a carnival in the sixties was dead, but after visiting with one of them men who had attacked them that night, Walker realises that his parents' killer has been living the life of Riley for the past few years, and he needs the help of an old cowboy who witnessed the crime to track him down.
Victor DeMarco, a mob boss who was put away in prison years ago, is given a new trial and intends to go free by using false witnesses. After his men kill two of the real witnesses, Walker and Trivette go undercover to protect the final witness, a rodeo rider who is an ex-boyfriend of Alex after he refuses protective custody.
Walker and Trivette go undercover in a prison as a convict and a guard respectively to gather evidence on a convicted felon that had a key witness and two rangers murdered, but are unaware that the assistant warden and some of the guards are working for the felon. On top of all that, Trivette gets exposed, forcing Walker to work alone and bust the warden before his own cover is blown and the felon walks free.
After saving a female Mexican immigrant who was brought in illegally and forced into prostitution, Walker goes undercover with Mexican agent Jesse Rodriguez as a peasant to track a large operation of slave-labor smugglers in Mexico that are migrating Mexican immigrants into the United States illegally by tricking them with false promises of providing them with a better life.
While being put to work at a farm, Jesse finds one of their men there to whom he once arrested a long time ago could identify him as a police officer once he remembers him which puts both his and Walker's cover at risk, forcing Walker to show his worth by standing up to the slavers to meet the real leader of this slave-labor operation before their cover is blown. Meanwhile, after the female immigrant they saved is recaptured and forced back into prostitution, Trivette leads a manhunt to get her back.
After arms dealer Randall Hooks is killed by Walker in a raid his older mercenary brother Caleb Hooks gets revenge by killing Phillip Daniels, the F.B.I. agent in charge of the bust and kidnaps Walker and makes him fight to the death. Meanwhile, Trivette works with Daniels' partner, Carl Bishop to locate Walker.
The world's most deadly assassin who has left a trail of blood in history, The Viper, is in town. Walker is informed and recruited by Interpol Agent Draper who's hunting the Viper now for nearly 25 years. Since the killer is in town to carry out another assassination - the target could be the visiting Israeli Ambassador - it's up to Walker to find and eliminate the Viper before he hits once again.
Vince Pike, the man who shot Walker's fiancee ten years earlier, manages to get an early release from prison. For Walker painful memories about the time with Ellen return. While he survived an attack by Pike's men back then, Ellen died. And now Walker seeks justice - and Pike a destroyed Walker when he wants to go after the persons in his life. First C.D., then Trivette, and finally Alex.
Thunder Malloy, a preacher, who is a friend of Walker's dies and his wife and sons are left to fend for themselves. Trent, the eldest son, who is also a former student of Walker's, who years ago, had a disagreement with his father, when he chose to join the Army as oppose to following his father's footsteps, decides to leave the Army and come home to help his mother and siblings. Walker tries to get him to maybe be a cop but Trent does not want to carry a gun. For the moment he works as a security guard. Walker is also working a case involving someone who is gunning cops, and it seems that one his targets is Trent's friend Carlos Sandoval.
As Trent tries to help out his family, and reconnect with his siblings especially his brother, Tommy, who felt that Trent deserted them. Walker tries to see if there is some kind of connection to all the cops that were killed.
Belle Starr McClain is an under cover agent working on Jack Garrett. When Garrett learns what she is, he kills her. Walker sends someone to get Garrett to incriminate himself on tape and was about to when someone jumps out of nowhere and tries to kill Garrett. Walker stops him. He reveals himself to be J.W. McClain, Belle's brother.
After an explosives expert known as the Iceman is hospitalized, the Rangers are forced to ask their old friend, Charlie Brooks, for help in catching a local crime boss who had hired the Iceman for a job, since Charlie bears a resemblance to the Iceman. While Charlie agrees to do this in exchange for not having to serve the rest of his community service, he soon loses the device that allowed Walker to keep track of him, not to mention that the Iceman soon escapes from the hospital.
Trivette is summoned to a nursing home called Quiet Rest by an old friend, Joshua Lenord. Lenord is a victim of Alzheimer's Disease and wants to show Trivette a tape recording of what's been going on at the nursing home. Lenord can't find the tape and then dies the next day. CD is sent in undercover.
With the help of Walker, Trivette visits his friend, Max Elson. Elson's a former rodeo star who suffered a paralyzing injury. And he is now facing the possibility of losing his ranch unless he can come up with some money - if he could only enter his horse Rainbow's End, in the Texas Derby, and win they might save the ranch and put a stop to Crown once and for all.
Walker's friend, Reservation Police Chief Sam Coyote has been seeing Nora Shannon, an archaeologist who has been working on the reservation. When he proposes to her she turns him down and things get a little unpleasant between the two of them. An oil company hires one of the men on her crew to do what it takes to get her to leave. But when that fails, he kills Dr. Shannon and frames Sam for her murder.
When Trivette shoots a boy by mistake after chasing some robbers with Walker. Trivette goes before a review board, and the man investigating the shooting is Lieutenant Moffett, who has grudge against Trivette, it seems that the two of them were competing for the same Texas Ranger post and Trivette got it.
Trent gains the reputation of being a defender for abused woman. Maria Mendoza, who is the wife of drug dealer, Rudy Mendoza, who also beats her. When she sees Trent in the newspaper, she calls him. After meeting him she decides not to seek his help for fear of what her husband might do. But Trent takes the case anyway with the help of Carlos.
Roscoe Jones, the (black) minister who succeeded Trent's father is being targeted by a man named Stan Gorman. Who testified against Gorman after he tried to kill him, Roscoe Survived, but is friend was killed. While in prison Gorman became head of a white supremacy group, and now he is after Roscoe.
Joe Lopez, a safecracker, who has been paroled returns to see his wife, Marta, and his son, Tommy, who are friends of Walker and the gang. While his wife is uncertain of whether or not she wants him back, his son hates him. She offers him a job at her new restaurant. Joe goes undercover with an armed gang of thieves for a case that Walker is working on.
The gang gets ready for Alex's friends Kim and Phil's wedding. Walker finally decides to propose to her after, but the wedding is then is attacked by a group of hitmen. When the shootout is all over, Walker tries again to propose to Alex, but she is shot by Karl Storm, a man she helped incarcerate five years earlier.
What should have been the happiest day of Walker's life quickly turned to one marked by tragedy as his darling Alex was targeted and shot by Storm -- a man she put away five years earlier on a hijacking rap. As Alex clings to life in the hospital with C.D. at her side, Walker takes to the streets of Dallas on a mission like no other -- to find the man who did this and make him pay at any cost.
Years ago, Walker put Garrett Stone behind bars and now that he's paroled -- it's payback time. As Garrett and his men pursue a Dallas bank-robbing spree, their getaway car driver is killed in a shoot-out. Trivette trains as a driver and then infiltrates their organization after arranging the gig through Bob, the owner of a hip nightclub on the east side. Meanwhile, Alex officially opens the H.O.P.E. Community Center (Help Our People Excel) and Carlos helps a young troubled boy say ""no"" to gang life.
After a young girl dies and other children fall seriously ill, Walker goes to the Cherokee reservation to investigate a factory that may be illegally dumping toxic chemicals into the reservation's water supply. When the Environmental Protection Agency tests the local waters and finds ""absolutely no trace of any toxins,"" Walker's suspicions lead him to dig deeper to uncover the real truth behind the factory. Although Walker and the Chief of Reservation Police, Sam Coyote,, try to persuade the enraged Cherokees to wait for real proof, they insist on taking matters into their own hands and launch an all-out warrior battle to destroy the factory and its supervisors.
What was supposed to be a six-day camping trip filled with campfires and nature hikes quickly turns into a nightmare for Walker after Alex is kidnapped by the crazy Trammel brothers. Walker, along with his buddies Trent, Carlos and Trivette, immediately follows their trail. When Trivette is buried under falling boulders, Carlos must lead him to safety and Walker and Trent are forced to go it alone.
As a radical group from the IRA attempts to stop the peace process in Belfast, Adam McGuire, raids their safe house and kills the leader's younger brother in self-defense. Now the faction vows revenge and orchestrates a plan. When McGuire takes his ailing 12-year-old daughter to Dallas for a life- saving bone marrow transplant to cure her leukemia, the IRA group is there to greet him. They kidnap the girl and hold her ransom in exchange for a renouncement of the peace agreement. Now Walker must do everything he can to save Jennifer McGuire's life, and to keep the peace.
Carlos' nephew is in trouble with the law when a gun is found in his room. The gun was used to kill a cop and hidden there by one of his friends.
There are recent mishaps at a motor speedway. The accidents are prone to a Cherokee team that turn to Walker for help. Meanwhile Trent and Carlos are searching for a teenage girl that has gone missing and is thought to have ended up in the hands of a registered sex offender.
Walker pitches in to race for the Cherokee indian racing team. Meanwhile, Carlos and Trent search for the evidence lost in their car robbery.
A wealthy Dallas family and staff are murdered, then another family's daughter is abducted by the same masked men. This was part of a larger plan that was meant to extort millions of dollars from other wealthy families. While Walker and Alex are transporting crucial evidence for a potential conviction which places them in harms way.
Walker and Trivette must stop a group of terrorists from releasing anthrax into the city in 48 hours.
Gage and Sydney have to protect an accountant from his criminal boss so he can live to testify.
An indian shaman transports Walker back to the 19th century to prevent a recurrence of a 20th century injustice.
Gage and Sidney must go undercover to save Gage's sister who's gone missing, while Walker and Alex go on a camping trip.
Country Singers Patsy,and Peggy Lynn are kidnapped by Record Pirates hoping to make a killing off the illegal sale of the Sisters Music.
The deaf daughter of an Elvis impersonator witnesses a murder, necessitating the Rangers' protection until the suspect is apprehended.
As the community prepares for the first annual charity rodeo, Trivette is being targeted by a vengeful father who believes he killed his son.
Walker goes undercover inside a prison to investigate enforced prize fighting.
After a young boy commits suicide, Walker works to improve conditions at a middle school; Sydney goes undercover as a singer to get close to a club owner.
After an amnesiac finds nerve gas at a genetic research facility, they need Walker's protection.
A Santa-suited group hits armored cars; a gang steals Christmas donations from a church where former members now worship.
Temporarily blinded by a bomb, Walker learns to cope while the other Rangers seek out those responsible.
After his daughter is shot in a bank robbery, an old man goes on a hunt for the shooters along with Walker.
After a powerful laser is stolen, Walker hunts down the thieves to discover they've subsequently had it stolen from them.
Seeking to prove her father innocent of murder, a student gets Trivette to help. Meanwhile, registering for their wedding shows Alex a part of Walker she'd not seen before.
Walker comes back from Los Angeles with Sammo Law to track down a killer.
A diplomat's son assaults Gage, but is protected by diplomatic immunity.
Walker has to stop white supremacists who are out to prevent the racially inclusive Unity Day.
Walker seeks to bring justice to a Vietnamese gang responsible for murdering the son of his former martial arts instructor.
Sydney and Alex are kidnapped by two Mexican brothers that are looking for revenge. Now is up to Trivette, Gage and Walker to save them. Or will the girls end up saving them?
Second part of two episodes. Sydney and Alex are kidnapped by two Mexican brothers that are looking for revenge. Now is up to Trivette, Gage and Walker to save them. Or will the girls end up saving them?
While on their trip, Walker, Gage, and Trivette face two deadly situations: a murderous criminal on bail, and a grizzly bear with a taste for blood.
As Walker and Alex prepare to tie the knot, Walker finds out that they have both been targeted for death by an assassin. The wedding, proceeds without incident. However, what happens en route to their honeymoon in Paris is a different story.
After Walker and the gang put an end to a baby kidnapping ring, Walker and Trivette must rescue a group of people including Alex and a young boy who are trapped in a collapsing building.
A rookie officer framed for departmental corruption takes Alex hostage.
Walker investigates the mystery of a statue that appears to cry real tears. Meanwhile, Gage goes undercover to bust the dealers of a designer drug called "white buffalo."
A professional wrestler friend of Trivette's dies, and the Rangers go undercover to investigate the truth about his death.
At a senator's behest, Walker must stop a criminal genius who has infiltrated federal law enforcement computer systems.
The Chairman continues to use knowledge gained from his computer hacking to terrorize federal agents, and manages to keep Walker at bay.
Walker begins making real progress in ending The Chairman's reign of terror.
In a desperate bid to avoid capture as Walker closes in, The Chairman kidnaps Alex.
Alex discovers an abandoned infant, and she and Walker become instant parents.
Walker tracks down a hijacked ambulance containing an urgently needed donor liver.
Walker tries to keep a promising young boxer from falling in with the wrong crowd. Meanwhile, the Rangers seek to stop an Ecstasy ring.
Four women escape from a bus taking them to Gaitesville Prison. Two of the women and their boyfriends go back to robbing banks. The other two are on the run and end up giving Gage a ride. Alex checks into the case of one of the women, Laura Pope. It looks like her case was mishandled by her attorney.
To help stop gang related activities, Walker organizes basketball tournaments amongst a group of interracial kids.
Cooke and Gage go undercover in a nightclub to help the owner thwart a group of gangsters looking to take ownership.
When a lawyer preparing to file a scathing police brutality lawsuit is found dead, Walker investigates.
The Rangers have six hours to rescue a billionaire's daughter before she is killed—live—over the Internet.
Workers at a Medieval-themed restaurant moonlight as fine art and jewelry thieves.
While kickboxing friends of Walker's visit, the son of a recently jailed mob boss vows revenge on those who put him there--a list that includes Alex.
Sydney and Gage use their undercover skills posing as bikers to infiltrate a meth-making gang.
When high-tech carjackers wreak havoc in Texas and kill Gage's old high school sweetheart, the Rangers make it their mission to bring the murderers to justice, while Gage learns to deal with his disability with the love and support of Sydney.
Walker and the Rangers try to intercept a huge black-market arms deal where ""blood diamonds"" are traded for weapons. At the same time, and outbreak of the Ebola virus threatens Alex.
Walker and Alex are so excited about the arrival of their new baby that they start decorating the nursery with everything a baby could want and more. Meanwhile, the Rangers stumble onto a movie set and become stars for a day, and Walker and Trivette participate in a charity motorcycle ride.
A notorious gang Walker put away returns for brutal revenge. The gang escapes from prison and targets each Ranger. As his closest friends are marked for death, Walker is torn between catching the killers or helping his wife, who is rushed to the hospital when she goes into labor. Meanwhile, Trivette reunites with an old flame and prepares to get on one knee and ask for her hand in marriage, and questions are finally answered regarding the infamous Hayes Cooper.
A notorious gang Walker put away returns for brutal revenge. The gang escapes from prison and targets each Ranger. As his closest friends are marked for death, Walker is torn between catching the killers or helping his wife, who is rushed to the hospital when she goes into labor. Meanwhile, Trivette reunites with an old flame and prepares to get on one knee and ask for her hand in marriage, and questions are finally answered regarding the infamous Hayes Cooper.