Family disturbances again are rife at Southfork as Sue Ellen begins her campaign to even the score with her husband J.R. Ewing. Sue Ellen decides to embarrass J.R. by going into business as a manufacturer of erotic women's clothing.
Bobby and Pam's wedding day bliss at Southfork is shattered when Ray Krebbs lashes out at their happiness. Depressed from an earlier argument with Donna, Ray enviously berates Bobby, which Pam overhears.
Bobby and Pam are forced to face a difficult decision about their wedding in light of Ray's startling revelation. J.R. receives shocking news about Wes Parmalee's claims -- information that may have a profound effect on the control of Ewing Oil.
Bobby leaves for South America in search of information to disprove Parmalee's claims, with evidence mounting that he really is Jock. The grim duty of retracing the route to Jock's accident faces Bobby in South America.
An angry Clayton goes on a manhunt and Miss Ellie seeks the aid of her sons in calming her furious husband. J.R., confident that the Middle East situation is at rest, learns some frightening news concerning B.D. Calhoun.
Sue Ellen is unsuspecting when B.D. Calhoun, whom she knows as Peter Duncan, makes contact with her in his vendetta against J.R. Calhoun "accidentally" bumps into Sue Ellen and Pam. Ray feels the frustration of losing his wife and their expected child.
Ewing Oil makes a financial comeback as Bobby and J.R. secure important deals, but J.R. is too overcome with anxiety about B.D. Calhoun to savor the success. Bobby becomes suspicious when J.R. acts overly concerned about Southfork's security system.
Fearing for the safety of their families, J.R. and Bobby send Sue Ellen, Pam, John Ross, and Christopher to California to escape the menacing threat of Calhoun but J.R. is forced into a deadly showdown when the terrorist locates them.
J.R. pays an emotional price for his involvement with Calhoun but he may face a bigger danger with the law for consorting with a terrorist. Despite her growing relationship with Senator Dowling, Donna feels stifled in her efforts for the oil lobby.
An ecstatic Cliff Barnes unloads a stunning bombshell on the Ewing brothers. Furious at Cliff's disturbing disclosure, J.R. divides the Southfork house by accusing Pam of scheming with her brother to bring ruin to Ewing Oil.
J.R. deviously schemes to frame Cliff Barnes for Jamie's death. While secretly maneuvering to secure the infamous ten percent of Ewing Oil, J.R. also orchestrates a meeting between April and a friendly judge who may end up being helpful to his cause.
An intensive court battle results in a decision which causes pandemonium in both Ewing and Barnes' camps. J.R. and Bobby undertake a vicious custody battle with Cliff for the elusive ten percent of Ewing Oil.
Tired of J.R.'s underhanded business tactics, Bobby, Ray, and Miss Ellie sell out, turning their shares of Ewing Oil over to J.R. News from Washington hurls the Southfork family members into angry turmoil.