For their latest case, the judge targets Tina Grey, a woman connected to the deaths of at least five reputed mobsters. Hoping to earn some points with the judge, Mark quickly arranges a meeting with her. He gets even closer than expected after he rescues her from men working for mobster Jersey Joe Beiber. In the meantime, Hardcastle raises the ire of police captain Don Filapiano for involving himself in an organized crime investigation. Not caring for the captain's methods, Hardcastle continues with the case and discovers that the captain is planning on using Mark as part of his plan. Learning of Tina's latest "fling", Beiber has his men grab her as well as Mark. After "interviewing" one of Beiber's men, Hardcastle learns where Bieber has taken Mark. Arriving in time, Hardcastle stops the mobster before he has a chance to kill Mark. Later, Hardcastle ties up all the remaining loose ends when he turns Filapiano over to internal affairs.

While at a local boxing arena, Hardcastle and McCormick witness a man named Frankie Kane threaten boxer Kid Calico. After a restaurant owned by Jack Calico, Kids' father, is destroyed in a mysterious fire, Hardcastle offers to help the young boxer. Hoping to keep the Kid out of Kane's grasp, Hardcastle publicly becomes his new manager. As expected, Kane sends his men after the judge. Thanks to Mark's driving skills, Hardcastle captures Kane's men. Back at Gulls Way, Kid Calico prepares for his next fight. The Kid's plans seemed to change, however, after Kane kidnaps his father. Using Jack as leverage, Kane instructs the Kid to throw his upcoming bout. Seeing no choice, the Kid prepares to lose the fight. Unwilling to let Kane win, Hardcastle and McCormick follow him. As expected, Kane leads them right to Jack Calico. Realizing that his father is safe, Kid Calico gives the fight his all and defeats his opponent. Later, his contract with Hardcastle is annulled and he finds himself eligible to go on to the Olympics.

Put on trial for racketeering, Frank Kelly manages to keep out of jail when he kidnaps the wife of Jack Bickford, the prosecution's star witness. Angered, Assistant District Attorney Pamela Peterson, Hardcastles' former assistant, reluctantly turns to the judge for help. Agreeing, Hardcastle arranges for Mark to infiltrate Kelly's company. Posing as J.J. Slattery, Mark applies for a job at Kelly's trucking company. After doing a background check on Slattery and discovering that he is an ex-convict, Kelly hires him. Kelly quickly clues Mark in on the operation and asks him to transport some stolen television sets. Not completely trusting Mark, Kelly has some of his men follow him. With the judge's help, Mark captures his pursuers. Faced with prosecution, the captured men agree to testify against their boss. Before long, Kelly once again goes on trial. Unwilling to go to prison and seeing no alternative, Kelly uses Pam as a hostage and escapes. Pursuing, Hardcastle and McCormick rescue the assistant district attorney and capture the racketeer.

Despite Mark's objections, the judge decides to look after Harold Death Ray Thomas, a paroled teenage gang leader. Hardcastles' rehabilitation of the youth is interrupted when a group of men unsuccessfully try to kidnap Harold. Although the judge fails to capture the men, he does manage to get their license plate. Running the license plate, Hardcastle discovers that the men who came to Gulls Way work for a hood named Shelcroft. Investigating further, Hardcastle learns that Harold was sent to prison for breaking into the offices of Shelcroft's psychiatrist. To his surprise, he also notes that Brandt, the judge on Harold's case, was one of the psychiatrist's patients. Some of the loose ends are tied up when members of Harold's old gang come after the former gang leaders hoping to retrieve some tapes. Confronting the youth, the judge finds out that the gang has been using tapes stolen from the psychiatrist's office to blackmail Shelcroft and Brandt. After warning Brandt to turn himself in, Hardcastle has Harold contact Shelcroft. Hoping to get the incriminating tapes, Shelcroft agrees to meet with the former gang leader. Falling into the judge's trap, Shelcroft is captured.

Mark gets back into the racing scene after an injured friend asks him to take over as driver for the Denny Collins team. Although the judge tries to feel happy for Mark, he grows increasingly suspicious of the large amount of money being poured into the team. His discomfort only increases when he meets Collins and seems to recall him from somewhere. Acting on a hunch, Hardcastle looks into Collins record. As expected, he discovers that Collins has a considerable criminal record. Furthermore, he learns that there is an active warrant for the arrest of Larry Singer, one of Collins' associates. Recognizing that Collins is crooked, Mark decides to continue as a driver only to gather evidence for the judge's case. In the meantime, Larry, realizing that Hardcastle is working with the police, kidnaps the judge. Also suspecting Mark, Collins' men sabotages the race car driver's car. Fortunately for Mark, he survives the accident. Afterwards, using his driving skills, Mark rescues the judge and helps him capture Collins and his men.

As the episode begins, Hardcastle and the police successfully close down an illegal arms operation being run by former CIA agent Peter Avery. They do not, however, manage to catch Avery. Not willing to let him escape, Hardcastle follows Avery to San Rio Blanco despite the fact that there is no extradition with that country. Once in Rio, the judge and Mark befriend Aggy Wainwright, the owner of a small air charter service. With some help from Judge Ramirez, a local official, Hardcastle locates Avery's local operation. Concerned that the judge is getting to close, Avery arranges for some crooked cops to plant drugs in Hardcastle's hotel room. While Ramirez and the state department work on freeing Hardcastle, Mark grows increasingly impatient. Seeing no alternative, Mark convinces Aggy to help him break Hardcastle out of jail. Once free, Hardcastle meets with Ramirez and Howard Daner, a state department official, and prepare a trap to catch Avery. Using himself as bait, the judge tricks Avery into following him across the border to neighboring country San Rafelo. Since San Rafelo does have an extradition policy with the United States, Avery is taken into custody.