Mark Graison returns into Pam's life and explains his long absence. J.R. plots to manoeuvre Cliff and Wendell out. Sue Ellen is scared before going through an alcohol rehabilitation program at the sanitarium. Mark's comeback shocks everyone around. Miss Ellie consults Gary before making a decision on Wendell's Farlow offer. Ray warns Jack Ewing against J.R. Miss Ellie tells Dusty Farlow to stay away from Sue Ellen. J.R. fears that Mark's return will be bad for his relations with Pam. Clayton warns J.R. against pressuring Miss Ellie on the Wendell offer. A burglar shows up at Jack's apartment. Cliff accuses Jack of changing his mind on Wendell's offer. Mark violently confronts J.R. over Pam's recent wild-goose chase in the Caribbean.

Miss Ellie feels sorry for J.R. and changes her mind on the Wendell offer. Sue Ellen apologizes to J.R. for the problems she caused as a wife and a mother. Sue Ellen leaves the sanitarium but doesn't go to Southfork. J.R. tells Sue Ellen that John Ross must stay at Southfork. Jack invites Jenna to be his date at the Oil Barons' Ball. Miss Ellie tells Pam that the Ewing family is falling apart. Donna learns of a serious abnormality in her pregnancy. Charlie is happy to see her mother dating Jack Ewing. Mandy Winger reappears and offer herself to J.R. A new and improved Sue Ellen shows up at the Oil Barons' Ball. Cliff and Jamie makes a scene at the ball. Jack and Jenna worry over Donna's medical problem. At the Oil Barons' Ball Bobby is posthumously named Oilman of the Year and Pam makes a startling announcement.