A criminal whose operations Walker and the others have been foiling decides to take them out, so has one of his men plant a bomb when they're all together. Walker sees him and discovers the bomb and tries to get rid of it but it blows up in his face. At the hospital they learn that Walker's blind and the doctors are uncertain if it's permanent. Gage and Cooke try to get the man who did this. Alex tries to help Walker cope but he's impossible. White Eagle shows up and tells Walker that he shouldn't worry if he can see again but to learn how rely on his other senses. ...
A young girl is shot when some men who committed a crime were shooting their way out. Her father is a former Ranger whom Walker knows. And he sets out to find the one who shot her. Walker tries to caution him about what he is doing. He gets the man 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 was the one who stole it. He's planning to sell it to some people who plan to use it for terrorism. But before he could it's stolen from him.
Walker returns from L.A. with Eagleton, the paramilitary man who killed a Texas Ranger and who was planning something is L.A. Walker turns him over to some other men and it's while in transit that some men kill the men escorting Eagleton and spring him. Walker tries to find him, knowing that he is planning something. Sammo Law, the Chinese cop in L.A. who helped Walker catch Eagleton comes and has some information he got from Eagleton's 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 and because his father is a diplomat has diplomatic immunity. Gage 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 but because of his diplomatic immunity they can't touch him.
Dallas prepares for a ceremony to promote unity among the races. A white supremacist group goes to Dallas 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.
When Detective Steven Nimh who infiltrated the organization of Billy Lo and has given Walker very useful information about Lo's operations. Walker feeling that Lo might be suspecting that he has a mole in his organization wants Nimh to pull out. But Nimh sensing that something big is going down decides to stay in. But Lo sets him up and is killed. So Walker with what info Nimh gave them tries to get Lo. At the same time Nimh's father who's 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 Walker 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 throw a ranch owned by Alex's friends. But when the husband catches them, he calls his foreman for help but he kills the man, apparently he works for the Ortegas. Upon learning of what happened the Ortegas make plans to buy the ranch.
Ortega abducts Alex, Cooke and some other people and demands the release oh his brother. Walker knows the man won't keep his word but a Fed allows the exchange but as Walker predicted Ortega doesn't release Alex and Cooke. Walker then goes across the border to get them and Trivette and Gage go with him.
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.
The Rangers stop a baby kidnapping ring that sells the infants to parents desperate for a baby. Also, a property owner wants his tenants out of the apartment building, so he plants a bomb with the people inside.
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 ...
A new drug called the White Buffalo hits the streets and Alex, Sydney and a young child find the drug dealers while they are hiking. Sydney is shot by the drug dealers. Walker investigates a buffalo statue that appears to be crying tears.
A man who calls himself The Chairman talks with various mob bosses and informs them that he knows who among their people are undercover operatives sent by the government. He offers to weed them out for a fee. But one man, named Cardoza who is based in Texas refuses but when the Chairman tells him that a Senator is in Dallas to meet with Alex on how to deal with him, he claims that it doesn't bother him. But, he actually decides to take her out. The Chairman then informs the Rangers who stop Cardoza's men. Later when the Senator is informed of undercover agents turning...
Walker and his team are still searching for the man who is eliminating undercover agents. He gets a lead when the son of a mobster goes to people who pay his father for protection asking for more. When one of them decides to go to his father and tell him what he id doing, he kills him. Someone sees it and tells Walker. Walker then sets out to get the mobster's son. The mobster then goes to the Chairman to deal with this.
Walker sets out to go after the Chairman. He decides to go after his clients. He decides to start with a man Rosetti knows who is now in Miami. He sends Rosetti, Trivette, Gage and Cooke. They eventually find the man's accountant. They convince him to testify against his boss. Gage and Cooke are bringing him back to Dallas. But when the his boss learns of this, he informs the Chairman who then makes sure he doesn't reach Dallas.
A man joins burglars to make money to feed his family. When things go wrong, he is killed. His wife and baby escape, but she has to abandon her baby with Alex. Alex cares for the baby while the case is solved. Alex learns she is pregnant.
The granddaughter of someone Alex and Walker knows is in need of a liver transplant. When a donor is found, the organ is on it's way via ambulance. But some men who pulled a robbery run into the ambulance literally. When their vehicle is damaged they take the ambulance along with the organ. So Walker tries to find it.