Jock suffers a heart attack and must undergo bypass surgery to survive. Meanwhile, Bobby is sceptical of J.R.'s business ideas.

Worried about not being able to produce a Ewing heir before Pamela does, Sue Ellen decides to pursue illegal adoption.

Sue Ellen and Pamela fear the worst about their husbands when they receive news that the Ewing Oil plane has crashed.

Sue Ellen is devastated when after having an affair with Cliff, she learns she's pregnant and does not know who the father is.

J.R. finds the perfect opportunity to make Pam look bad after she becomes friends with a former call girl.

J.R. works to get Bobby back in the office so that Jock will be forced to say home. Pam surrounds herself with her work after losing her baby.

Bobby has a hard time running Ewing Oil with J.R. undermining his every decision. Meanwhile, Miss Ellie finds the gun that was used in the shooting and Sue Ellen, full of guilt, has nightmares about J.R.'s shooting.

Loving his newfound power as head of Ewing Oil, Bobby works to accomplish something that Jock or J.R. never did -- buy a refinery.

Pam begins to feel lonely as Bobby spends most of his time preoccupied with Ewing Oil. Meanwhile, J.R. tries to convince Jock to work on a deal that would go against Bobby.

J.R. falls for Mitch's sister, Afton, and tries to gain the upper hand when Bobby makes a deal on behalf of Ewing Oil.

As J.R. flirts with Afton at the wedding, Sue Ellen finds herself pursuing an old boyfriend.

J.R. sets out to exact revenge on the Asian government after it takes over Ewing Oil wells. Meanwhile, Bobby looks into solar energy.

The body found in the pool on Southfork is finally identified, which prompts J.R. and Cliff to accuse each other of the murder.

J.R. wants Ray's Ewing Oil voting shares and to ruin Sue Ellen and Cliff's friendship. Bobby manages to make some inroads into adopting Christopher. Donna begins to work on her next book. After seeing Mitch with somebody else, Lucy ends up with another man.

J.R. arranges a job opportunity so that Cliff will be out of Dallas. He then attempts to reunite with Sue Ellen. Donna finds Ray with another woman. Bobby buys a business for Pam to run. Evelyn informs Lucy that she wants to be with Mitch.