As J.R. plots to get Donna out of Dallas, a disaster strikes at Ewing 12. Meanwhile, a new ranch hand is hired at Southfork.

While Sue Ellen goes out of her way to embarrass J.R., Donna and Ray's marriage continues to be strained by Donna's lobbying. Meanwhile, Cliff sets out to get Jack's portion of Ewing Oil.

J.R. must juggle trying to save the oil industry and dealing with Sue Ellen's lingerie business. Meanwhile, Miss Ellie makes a shocking discovery.

Wes makes a shocking announcement to Miss Ellie. Meanwhile, Ewing Oil must seek out a loan.

Miss Ellie reveals that Wes claims to be Jock; April, Jack's ex-wife arrives in Dallas; and J.R. sets out to expand Ewing Oil.

While everyone looks into the shocking claim that Wes is Jock, Cliff goes after April's share of Ewing Oil. Meanwhile, Mandy and Sue Ellen pair up to embarrass J.R. and Donna suspects that Ray is having an affair.

It's Bobby and Pam's wedding day, but Ray steals the spotlight when he makes an unexpected announcement.

The shocking news that Jenna is carrying Bobby's baby stops the wedding. Meanwhile, J.R. continues to make the cost of oil rise.

Sue Ellen decides to turn her life with J.R. into a movie; Wes makes his claim very public during an Oil Baron's Ball.

Wes undergoes a lie detector test to prove that he is Jock. Meanwhile, Sue Ellen pressures J.R. and April continues to try to scheme Jack.

Bobby heads out to the site of Jock's crash looking for evidence that would contradict Wes' claim.

The turmoil concerning Wes Parmalee sees J.R. and Clayton managing to find some common ground. Bobby shows up with the truth about Wes but someone else beats him to telling Miss Ellie the truth. Donna meets a charming senator. Pam forms a partnership with her brother. Jack manages to surprise Jamie.