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.

Ortega abducts Alex, Cooke, and some other people and demands the release of his brother. Walker knows he 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, Trivette, and Gage to go with him.

Walker, Trivette, and Gage go to Walker's bachelor party in the woods where Gage is attacked by a bear.

As Walker and Alex's wedding takes place, a pair of assassins is hired to kill her.

Just as Walker and Alex are about to go on their honeymoon, the pair of assassins who were hired to kill Alex and whose partner Walker killed, sets out to get them. And he's determined to do so even if he has to bring their plane down.

The Rangers stop a baby kidnapping ring that sells them to parents desperate for one. Also, a property owner wants his tenants out of the apartment building, so he plants a bomb in it with them inside.

Walker, Trivette, Alex, Gage, and Cooke go to another city to play baseball with its police department. Alex meets with the D.A. who is a friend of hers 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, but the other gets away.

A new drug called the White Buffalo hits the streets and Alex, Cooke, and a young child find the dealers while hiking. Cooke is shot by them. Meanwhile, Walker investigates a buffalo statue that appears to be crying real tears.

A wrestling friend of Trivette's is killed during his flying entrance to the ring. The Rangers search for the businessman who wants to put the wrestling company out of business.

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 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.

Walker and his team are still searching for the man who is eliminating undercover agents. He gets a lead when a mobster's son 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's doing, he kills him. Someone sees it and tells Walker who 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 there. 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 his boss learns of this, he informs the Chairman who then makes sure he doesn't reach there.

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

A man joins burglars to make money to feed his family. When things go wrong, he is killed. His widow and baby escape, but she has to abandon the baby with Alex. She cares for her while the case is solved and then learns she is pregnant.

The granddaughter of a friend of Alex and Walker's is in need of a liver transplant. When a donor is found, the liver is on its way via ambulance. But some men who pulled a robbery run into it literally. When it is damaged, they take it along with the liver. So Walker tries to find it.

Walker takes in a young boxing prodigy after his parents are killed in a car accident. Meanwhile, Gage and Cooke go undercover to take down a drug ring.

A bus transporting female convicts is forced off the road and the ones who do so are the partners of two of the convicts on board. They proceed to go on a crime spree. The other two are chained together and escape. One of them claims to be innocent of the crime she was convicted of and tries to find her son. Her husband tries to find her so he can kill her. They eventually run into Gage who is on a bike ride.

Boomer Knight runs a youth center in a gang neighborhood to keep the children from joining the gangs. Walker helps him organize basketball tournaments. The drug dealers try to intervene by kidnapping him.

Walker and the others are working on reports that the mob is making a move on Dallas and they are forcing criminals to turn their operations to them or else. At the same time a friend of his, who owns a club, borrowed money from someone who works for the mob. And after he pays them, they insist that he give them ownership of the club. When the mob boss arrives, he tries to kill him, but Walker stops him, and they agree to work together to get them.

After a lawyer who is representing a man who was beaten when he was arrested is shot, Walker and his team must find out who did so.