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 up dead, she decides to form a task force to find who is doing it and she wants Walker to head it. Walker accepts and he brings in, Trivette, Gage and Cooke to help him and he is told that a New York cop named Rosetti is part of his team. Thinking that whoever is doing this must be hacking the Government's computers, Trivette gets a hacker who is in jail to help them. They start by going after Cardoza.

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.

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