Early on in the season, Lucy fights with Ray. She threatens to expose their relationship, but he is not intimidated by this, convincing her that the family will never believe her word over his. Desperate and frustrated, Lucy runs away from the ranch. Her disappearance exacerbates tensions between the family at home as they search for her. Wandering the streets of Dallas, Lucy is approached by a strange woman.
Also in the city, searching for Lucy, Pam and Bobby fight about where his loyalties lie; Pam is disappointed with her husband’s acquiescence to the family’s mercenary values. She wants him to stand up for himself and try to challenge J. R.’s authority, Bobby wants both of them to just try and fit in with the rest of the Ewing’s. Pam is disgusted and storms off.
She happens on Lucy. The mystery woman is standing with her, but Pam only catches a glimpse before she disappears. Lucy refuses to explain who the woman is, or why she herself ran away.
Pam’s return with Lucy, safe and sound, gets her into Jock and Ellie’s good graces, Lucy is also far friendlier than she was on their first meeting. Pam latches onto this friendship as she becomes more estranged from her husband, telling Lucy everything, even things about the business that Bobby tells her. One particular piece of information is that The Ewings are aware that the company that ships the crude oil that they produce to the refineries is using increasingly unsafe practices to cut costs.
Lucy sneaks away to the city and meets up with the woman, who is revealed to be her mother, who hopes to gain revenge on the family that drove her away by orchestrating their downfall. Lucy tells her about the dodgy shipping business, hoping that her mother will agree to her plan to sell the story to the newspapers and get enough money to build a life together. However her mother tells her to wait. They argue, and Lucy breaks off contact with her.
At the ranch, Pam catches Lucy returning from her covert visit to the city, and intends to confront her about it, but is distracted by her newly discovered pregnancy, which she is trying to keep a secret as she is having second thoughts about her marriage.
Disaster strikes when a ship carrying crude oil from the Ewing’s ranch is wrecked, causing a horrific oilspill. The business is damaged, but the public doesn’t yet know that the Ewings were aware of the unsafe shipping practices. Overjoyed, Lucy visits her mother, but once again she refuses to break the story, asking her what the Ewing’s plan to do. Lucy informs her that J. R. is travelling to the city to deny that the family had any knowledge of the danger before the oilspill.
Lucy breaks the story herself, and returns to her mother’s home to find it empty.
J. R. lies glibly at the press conference, smoothing over much of the damage. As he exits the building, he is met by a throng of new journalists; Lucy’s story has broken and all his work is undone. Among them, Lucy’s mother pulls a gun and shoots him, escaping in the confusion. J. R. is left in a coma, and Lucy is forced to stay at the ranch as her mother is now a fugitive.
The season begins with J.R alone in his hospital room slowly waking from his coma. The machines he is attached to start to beep loudly and a nurse rushes to his attention. He is weak, having been in the coma for 3 months but he musters up the strength to whisper the name “Lucy” into the nurse’s ear. A few rooms over in the hospital we find Pam having an ultrasound. The doctor asks where her husband is and she avoids the question. He tells her she is 5 months pregnant with a healthy baby boy. Meanwhile at the ranch Lucy is confined to the property and being heavily disciplined by Ellie. When Ellie leaves to see the police about tracking down Lucy’s fugitive mother Lucy gets into a car and drives to a little cabin by the lake at the back of their ranch. Inside it is revealed that Lucy is hiding her fugitive mother, bringing her food and water. She is still angry at her mother but cannot bare the thought of her being put in jail. Outside the cabin we see Ray peering in through the window spying on Lucy and her mother with a sly grin on his face.
When Lucy gets back to the house Ray confronts her. He says that if she doesn’t rekindle there relationship then he will tell the Ewing’s where her mother is. Lucy reluctantly agrees and their secret affair continues.
Meanwhile Ellie is at the hospital with J.R, mothering him. Eventually the doctors allow her to take J.R home to the ranch. When J.R sees Lucy he ignores her, pretending she is not in the room. Jock tells Lucy that the only reason she is still here is that the shooting distracted enough from the dodgy shipping dealing that the company will be ok for now. At the same time Pam is struggling with how to tell Bobby about the pregnancy. Ellie keeps asking Pam if there is something different about her, Pam tries to brush it off and at an incredibly awkward dinner party where Lucy is being completely ignored by the family Ellie suggests that Pam might be pregnant. Bobby is shocked and asks Pam if it is true. Pam storms off and leaves the ranch.
Later we find Ray helping Lucy by going out the little cabin and feeding her mother when she is restricted to do so. He begins to delude himself that Lucy is grateful for what he is doing and that she must truly love him. Meanwhile Bobby has decided to go searching for Pam against his mothers will. He goes to Pam’s father’s house and finds her there. Her brother is being extremely protective and tries to get him to leave but eventually Pam decides it is for the best for her child if she goes back with Bobby. Pam asks Bobby if when they get back they could go to the cabin to get away from his family just for the night. Bobby agrees. As they approach the cabin they are unaware of what they will find. They have a conversation in the car about their relationship and it seems as though they are finally properly making up. They get out of the car, open the cabin door and inside it is revealed that Lucy’s mother has been hiding out there. The shock of this sends Pam into pre-mature labor and Bobby is torn between taking Pam to the hospital and avenging his brother by making sure Lucy’s mother doesn’t escape.
We open at the hospital. Pam, her face pinched and pale, is staring out the open window. Bobby is a blurry figure in the background, speaking, but the words are unintelligible, as if he’s speaking from underwater. Eventually, Pam turns her face towards him. “What?” She snaps irritably. Bobby, squirming like a little boy in the face of her cold, broken demeanour: “I said you don’t need to be sad. We can try again. We can have another baby.” Pam stares at him blankly, feeling nothing for this pointless little man. “I’m not sad because the baby is dead. I’m sad because secretly, I’ve never felt more relieved in my life. And what kind of person does that make me?” Bobby stammers, useless, incapable of comprehending her. Pam: “I want a divorce. I want out of this family.”
Pam goes to stay with her father, and hires a lawyer. This lawyer is all jawline, sleek hair and piercing eyes. Hot lawyer is hot. He’s kind, sympathetic. Pam increasingly starts relying on him. Bobby is reduced to impotent rage whenever the lawyer is around, insulting Pam, stalking her, begging her, demanding that she doesn’t divorce. Hot lawyer smoothly defuses the situation each time. But then he goes back, when Pam is unaware, and punches Bobby and threatens him viciously and expertly, revealing his dangerous side. Afterwards, he meets up with Lucy’s mother and tells her the situation is going exactly as they planned. Hot lawyer actually works for a rival oil family, and is working with Lucy’s mother, who escaped. Hot lawyer is using Pam for information, to create discord and instability in the family, but is increasingly finding himself genuinely attracted to her. Pam and Hot Lawyer start having an affair. Eventually, hot Lawyer confesses his plan to her, and tries to convince her to join him and the rival family in taking down the Ewings. Pam, horrified, refuses. She fires him and tells him that if she ever contacts her again, she’ll call the police. Heartbroken, Hot Lawyer becomes even more determined to take down the Ewings.
Lucy has run off from the ranch with Ray to another town, Ray has a job in another cattle ranch. Ray is like a subservient puppy dog at this point, utterly convinced that the two of them are deeply in love. Lucy of course secretly despises Ray, finds everything about this old, gross man totally disgusting. She’s using him for a place to stay, for money. Since her mother entered into a partnership with the hot lawyer, she’s had little use for Lucy. Lucy is spiralling out of control, finding herself cut off from both her fugitive mother and her surrogate family. Hot Lawyer starts enabling Lucy, encouraging her to start drinking heavily, manipulating her into blaming Pam for her ruined life and the Ewings. Lucy is vulnerable and is easily convinced, she becomes obsessed with how the Ewings ruined her life, and how Pam particularly ruined everything. Drunk, full of rage and heartbreak, she pulls a gun on Pam, and forces her to drive to the Ewings ranch one night to confront the family. Lucy confronts Ellie particularly, and Ellie tells Lucy that she was the biggest mistake the Ewings ever made. Infuriated, Lucy storms out and sets fire to the ranch.
The family flee the burning house to a safe distance, but Bobby isn’t with them. The season ends with Pam running into the burning house to find him.
Cold open: Pam bursts through the front double-doors out into the former glory of the Ewing mansion’s main entrance hall. Beaming family portraits which ascend its double staircase unhinge and shatter to the floor amidst the destruction. Pam is frozen in shock, even more distraught than she could have anticipated from the outside, but swallows hard, a look coming over her face which confirms her volition to power through whatever she may find inside, and high-heel sprints up the staircase, stomping over a picture of Ray.
Montage: Pam sprints through the intricate hallways of the Ewing mansion to the tune of an 80’s power ballad. Each time she enters a new room, an image is superimposed over the ruins - first the women of the family laughing in the kitchen as they cut the crust off piled up sandwiches, then the men of the family filing in to the dining room whilst delightedly perusing the culinary splendours prepared by their overeager female relatives, then the men enjoying beers and laughing in the living room around the hearth of a fireplace. Then a series of bedrooms where the superimposed image is that of its corresponding family member providing a message of encouragement - “You can do it, Pam.” “Go on and get our Bobby for us, Pammie.”
The montage ends with Pam rushing through the door of the master bedroom, her hairline having shifted from a middle to side part in the intensity of the pursuit, though each follicle remains impeccable. Standing in the midst of a few pieces of pried open floorboard is Bobby, attempting to pull a large cardboard box overflowing with papers out of the ground. Pam tells him to ditch the box. Bobby flatly refuses. Pam insists it isn’t necessary, “whatever it is”. A portrait of Bobby’s parents falls from behind her and Pam looks across to see smoke building up at the door. Bobby reluctantly tells Pam that it would be safer to follow him under the house. She follows him down there and finds a large circular vault which opens out on to a step ladder. Pam climbs down the stepladder and Bobby airlocks the vault after her. The dingy, mysterious underground cavern is at least definitely safe.
The next day at the Ewing house, the rest of the Ewing family, along with their friends and neighbours are gathered in front of the ruins, being interrogated by the police who presume both Bobby and Pam to be dead. The lawyer, parked in a car across the street, pulls a photo of Pam out of his wallet and weeps into his vehicle’s sun visor. Then he gets a phone call from a disguised voice, who assumes that he is enjoying the demise of the Ewing family, and gives him a time and address of where he can meet ’to follow through on this. This time they’re really going all, the way, down.' Through tears, he replies that he could never do such a thing and regrets any bad intentions had towards the Ewings, ’seeing them like this'. Then he becomes angry and demands to know who’s speaking to him. The other line hangs up and the lawyer throws his phone on to the passenger seat. The lawyer collects himself, and looks down at the phone. He writes down the time and address on the back of Pam’s picture.
Pam and Bobby are travelling down a long cavern, Pam complaining that they have been for weeks. Their only supplies are the box of papers which Bobby won’t explain. Bobby and Pam argue about Bobby’s hesitating to let her down there in the first place, despite the fact that it was necessary to save her life. Bobby insists that she doesn’t understand. Pam asks if it would have been better for her to die then, than find out we’re they’re going. Bobby says maybe.
Two policeman who previously broke the news of death to the Ewings discuss the tragedy, felt by the entire town, whilst posted on a quiet highway to pick up speeding drivers. They hear a rustling in the woods and investigate to find a highly intoxicated Lucy, wandering through the trees. They take her in the car to drive her back to the station. As we follow the car away from the area, we see who else is in the woods - the lawyer, who privately monologues that the ‘evil, Ewing-hating, good-for-nothing’ hasn’t shown up yet, but that he will wait for however long it takes to find him.
Back at the police station, the officers explain that they are only going to keep Lucy detained until she sobers up, but Lucy, in her drunken state, interprets this as the officers’ underestimating of her capabilities. She proceeds to confess the crime of burning down the Ewing mansion. The officers look at each other and decide to bring her in to the interview room.
Weeks later, the dishevelled bearded lawyer is still lurking through the woods. He has found an axe which he uses to chop wood for lighting fires in the cold. He chops a tree, which collapses on him, and he dies.
Finally emerging from the cavern, Pam is horrified to learn that she is not in Dallas anymore, when a nearby sign reads ‘Welcome to San Francisco’. Bobby will explain nothing and says the first they’re going to do is check into a hotel.
Back at the hotel, Bobby can take Pam’s ‘nagging’ no longer - he confesses that the box contains necessary financial documents pertaining to the origins of the company, but includes evidence of the long-repressed fact that Bobby’s great-grandfather who started the company lived until his death in San Francisco, refusing to move the company to Dallas despite financial opportunity because he actually preferred California, and that the company/family only moved to Dallas when his son took over and took hold of the neglected opportunity. Bobby breaks down crying and talks about how he knows his family are true Dallas people despite the records. He recounts his childhood in Dallas and many happy Southern memories. Pam wipes his tears and asks him to tell her more about Dallas. He professes his love for Dallas more. She appears mysteriously enamoured by his sentiments.
The lawyer’s body is found by Ray, returning from the ranch to apologise to the Ewing’s. He finds the photo of Pam and the address, which is where he is. He calls the Ewing’s, thinking that Pam is hiding out in the woods.
Bobby and Pam return to Dallas, down the same highway which the police picked Lucy up on, and the entire Ewing family is out searching for Pam on. They exit the car and embracing each other. In all the celebration, they announce that Pam is pregnant. Montage: Lucy behind bars. The christening of the baby. Everyone is overjoyed.