Among the issues Walker has to deal with include a new partner named Trivette, a group of men terrorizing a circus family who camp out at his home, and some bad guys who plan on the ultimate bank caper.

The leaders of a money laundering operation at a bingo hall are captured and put on trial. The accountant is asked to testify against her bosses. Walker and Trivette have to take her to court, but she keeps escaping them for her own agenda.

Walker transporta a un contador de la mafia en un avión para que testifique en el tribunal. El líder de la mafia quiere que esté muerto, así que provoca que el avión se estrelle. Walker y los sobrevivientes deben encontrar su camino desde el lugar del accidente hacia la seguridad mientras la mafia los persigue.

When a friend of Walker's who is a Reverend dies, his son, Trent who's one of Walker's students who has been an instructor at the Army returns home. He is uncertain of what he's going to do. He doesn't exactly want to be like his father and would like to help people like Walker but doesn't want to carry a firearm. At the same time someone is killing cops and Walker is wondering why. And among his targets is Carlos, a friend of Trent's

Walker tracks down crooked geneticists who have kidnapped an important scientist whose unique DNA is vital to their research in developing super-soldiers.

Los traficantes de drogas están siendo más activos y audaces al intentar vender sus drogas. Se enfocan en una escuela secundaria y un profesor es asesinado cuando intenta alejar a los traficantes de los terrenos de la escuela. Los estudiantes deciden que deben recuperar su escuela.

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.

Los atletas de Special Olympics están en la ciudad para la competencia. Una chica hace amigos con los Rangers y sus amigos. Ella es testigo de un ataque de un sicario a Trent para evitar que testifique en el tribunal.

A high school principal reaches out to Walker when his school is overrun by drugs. It appears to be an inside job as the students always know when there is a raid. When the principal finds the leader, he is killed.

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 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.

Un diplomático chino que es amigo de Walker está en el país para llevar a algunos estudiantes a su país. Más tarde, cuando uno de los miembros del personal de la Embajada china aparece muerto, Walker y los demás investigan. Gage tiene un encuentro con el hijo del diplomático y, debido a que su padre es diplomático, tiene inmunidad diplomática. Gage no está satisfecho y piensa que deberían vigilarlo. Más tarde descubren que el miembro del personal podría haber estado involucrado en el contrabando de drogas. Y que el hijo del diplomático es el responsable, pero debido a su inmunidad diplomática no pueden tocarlo.

Mientras se lleva a cabo la boda de Walker y Alex, se contrata a un asesino para matarlos.

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).