Chase's wealthy mother, Jacqueline Perrault (Special Guest Star Lana Turner), mysteriously returns to Falcon Crest. When Jacqueline warns Chase of Angela's treacherous nature and tries to persuade him to leave Falcon Crest, hatred erupts and Jacqueline argues with both Angela and Chase. However, through their conflict, the mother-and-son relationship is strengthened; Jacqueline is convinced that Chase will survive and prosper in the valley.

Against Maggie's wishes, Cole moves in with his new lover, Katherine Demery. Richard finds out and plasters The Globe with clandestine photographs of Cole and Katherine kissing. Jacqueline Perrault, Chase's mother, arrives from Zurich for a surprise visit and gives Chase money for Cole's legal defense, but Richard uses his contacts in Zurich to force Jacqueline to leave town. Angela buys up expensive stock in The Globe and continues tracking Emma to get her proxy. Lori demands that Lance come out in the open about their relationship. Lance is defiant when Melissa confronts him about his late night trysts. After a sudden complication in Melissa's pregnancy confines her to bed, however, Angela pressures Lance to spend more time with his wife.

At the winery, Angela plays Lance and Cole against each other. Chase finds out that Richard is planning to use a false company front to buy up grapes at twice the going rate. Despite the threat from Richard, Jacqueline wants Chase to work with Richard against Angela. When Cole wants to tell Lance that he is the father of Melissa's child, Melissa strongly opposes it. Angela offers Darryl more money to maintain Maggie's hopes of getting her script produced. In spite of bribing Richard's banker, Kenderson, into postponing the new stock issue, Angela still needs Chase's votes on The New Globe board to take over the newspaper. When Chase arrives at Richard's office to deliver a construction injunction on his new winery, Jacqueline surprises both of them with news that she gave Richard up for adoption when he was a baby, which means that Richard and Chase are half-brothers.

Richard rejects Jacqueline's explanation of why she gave him up for adoption. Despite being cleared of charges for Carlo Agretti's murder, Cole is continually harassed by the police and the community. By making an insincere appeal to their brotherly bond, Richard asks Chase to vote against Angela's take-over bid of The New Globe's board. In turn, Chase makes Richard give up construction of his winery, in exchange for his votes. Lance and his date Brenda attend Angela's annual Founder's Day Party at which Angela later becomes furious when she catches them in bed together. Richard and Melissa not only confess their attraction to each other, but Richard also announces to the entire party that he finally has found his mother, Jacqueline. Angela then publicly denounces Jacqueline for ruining her marriage with Douglas.

Angela's Founders' Day Party is in disarray following Richard's announcement that Jacqueline is his mother. When Chase confronts Richard on the veranda, Richard reasons he did not promise to keep Jacqueline's secret, only Chase's. When Angie turns on Jacqueline, Chase suggests taking her home. After Richard calls his mother an adulteress, Chase strikes his half-brother, and subsequently Chase and Maggie whisk Jacqueline away. The next morning, Chase regrets hitting Richard, while Jacqueline believes that the events of the previous night are in the past. She also understands Richard's bitterness, although Chase may never trust Richard again. At Falcon Crest, Melissa overhears Lance making plans to meet Lori. Melissa's attorneys are still evaluating all offers. Nick and Sheila, in their bedroom, share a moment as they dress.

At the Tuscany Hospital, Chase pushes Maggie's wheelchair toward their car. As it has only been a week since Maggie's accident, the doctor orders her to be careful because she had suffered a severe concussion. Chase tells Maggie that he is not taking her to the hotel, but home. At the Falcon Crest meadows, Lance and Melissa ride horses and gaze at the land that they hope will be theirs someday. Lance shows Melissa the divorce papers that he had intercepted before Julia could see them. Over at The Globe office, Phillip discovers that Richard has not been seen for ages, nor has Diana Hunter. Emma sees Phillip leave Richard's office, which piques her curiosity. At the Gioberti's house, Chase tells Maggie that her close call with the barrels was not an accident because he had heard someone running away. Angie arrives and insists on having Vickie's wedding at Falcon Crest, while Chase is still concerned with the accident and Richard Channing's disappearance.