A lone horseman gallops across the landscape, spurring on his horse. An acoustic guitar starts a quiet theme, with horns entering to overlay it.
A man sits behind a desk. He has a Marshall’s badge on his shirt. Suddenly, a Sheriff’s badge is dropped on his desk. He looks up to see a grim, silent stranger, the man we know as Number Six. The Stranger unstraps his gunbelt and leaves it on the Marshall’s desk.
He walks along the trail, his saddle slung across his shoulder. At the top of a hill, he is confronted by a gunslinger, who forces a fight on him. The Stranger beats him, only to find five other gunmen surrounding him. He wades into them but is beaten unconscious.
The title card Living in Harmony, in the Prisoner font, appears on screen, followed by a screen detailing guest stars.
The Stranger is taken to an isolated Western town. The name Harmony is displayed over the wooden arch on the road into town. He comes to, looking around at his setting. An offscreen voice, coming from a Mexican figure, welcomes him to Harmony and suggests he try the saloon.
The Stranger enters the Silver Dollar saloon, a traditional western saloon with tinkling piano, noise, whiskey and bar-girls, such as Cathy, a buxom woman in her late thirties, in an off-the-shoulder dress. The saloon falls silent as he enters. Cathy welcomes him and the bartender slides a shot glass of whiskey down the bar: the first one is free for regulars.
As the Stranger moves to pick up his glass, an offstage voice invites him to sit with him, followed by a gunshot that shatters the glass. Unmoved, the Stranger orders another whiskey, though he hesitates a moment before picking up the glass.
He takes it over to the Judge’s table. The Judge, who has iron grey hair, is dressed in the frilly shirt an dark suit of a riverboat gambler. Stood behind him is his bodyguard, the Kid, and only a look is needed to realise that the Kid is dangerous. He is tall and thin, with a pointed face, and he is wearing high-waisted trousers with braces over a pink, unbuttoned undershirt. He also wears an immaculate, shiny top hat.
The Judge wants the Stranger to work for him as Sheriff in Harmony, but the Stranger has no intention of staying. He leaves the saloon, pausing only to punch the Kid in the mouth, knocking him down.
He tries to buy a horse at the stables, but the owner asks $5,000. As he walks away, the Stranger is surrounded by townsfolk, telling him what a good place Harmony is to live, and how the Judge looks after them all. The Stranger is unconcerned, but the Mexican starts shouting angrily that he has insulted their town. The townsfolk are quickly incited into a lynch mob, and the Stranger has to be rescued by the Judge’s gunmen, who put him in jail in ‘protective custody’.
The Judge is waiting in the Sheriff’s office and repeats his offer. When the Stranger declines it again, he is put in a cell. The townsfolk are still baying outside, so the Judge cynically offers them a sacrifice: another prisoner, Johnson, is dragged from his cell and handed over to the mob, who quickly string him up. Cathy runs from the saloon, crying, but is prevented from interfering: Johnson is her brother.
The Stranger relaxes in his cell, under the watchful eye of the Kid, who is toying with his gun and making elaborate play of lining up a shot. Cathy brings him a bottle of whiskey from the saloon. Though she is clearly older than him, the Kid is equally obviously fixated on her. He prowls around her then clumsily grabs her, trying to kiss her, but she wriggles free and returns to the saloon. However, whilst he has been pouring their drinks, she has slipped the jail keys off their hook and she appears at the cell window, leaving these for the Stranger.
Once the Kid has finished his whiskey and fallen asleep, the Stranger unlocks his cell, steals a horse and sets out on the trail. However, the Pass is guarded and he is ambushed and dragged back to Harmony, and in front of the Judge in the saloon.
The Judge calls for a hearing and the saloon is quickly converted into a ‘courtroom’ When the Stranger asks what charge, the Judge says he faces none: he was in ‘protective custody’. The charge is levelled against Cathy, for helping a prisoner escape. She is found guilty, and goes to jail, but the Judge advises the Stranger that she will go free if the Stranger agrees to become Sheriff.
He goes to the saloon for a whiskey. A gun is slid along the bartop to him but he ignores it. It comes from the Kid, who wants him to fight. When the Stranger refuses to react, the Kid shoots twice, one shot grazing the Stranger’s right cheek-bone, the other the back of his left hand. The Judge breaks things up, ordering the Kid back to the jail. The Stranger slides the gun back along the bartop, telling the Kid he’ll need both to deal with a woman.
With the unstable Kid in the jail alone with Cathy, the Stranger decides to accept the role of Sheriff, but whilst he will accept the badge, he will not accept the gunbelt and gun that goes with it. Cathy apologises to him that she has got him into this but he gallantly brushes this aside.
The following morning, the Stranger goes out with his badge. He is confronted by Zeke, who challenges him over not carrying a gun. The Stranger beats Zeke but is set upon by his two friends, one of whom beats him heavily. But the Stranger hauls himself back to his feet, knocks the third man out and dumps him in the horsetrough.
The Kid arrives in the saloon which is busy. He is looking for trouble. Will, a drunken cowboy, puts his arm round Cathy. The Kid reacts by viciously stubbing out his cigar on Will’s neck. Everybody clears out of the way, leaving the hapless Will facing the kid. Hurriedly, he scrambles out his gun but stands there, holding it foolishly. The Kid draws his gun and shoots Will down. The shot brings the Stranger running, but the crowd confirm that Will drew first. The Kid leaves. When the Stranger follows him, the crowd start shouting at him, that he is the Sheriff, that he should be able to do something about this.
Back at his office, one of the townsfolk approaches the Sheriff offering his help in cleaning up the town. It is not something any of them can do alone. However, the Judge is aware of the visit, and sets his men on the townsman. They beat him to death and leave him in the Sheriff’s office. The Stranger angrily gets out the gunbelt the Judge gave him, but rejects it again.
In the saloon, the Stranger quietly tells Cathy to get her things together and meet him at the edge of town that night as they are leaving. The Judge suggests that someone ought to tell the Kid that the Sheriff is talking to his girl. At dusk, he rides out towards the Pass, where he ambushes the ambushers, leaving them tied up.
Meanwhile, the saloon empties. Cathy gathers her things and prepares to leave the saloon, but the Kid blocks her. She calls him crazy, then tries to run from him in fear. He intercepts her, crushes her in his arms and kisses her, but she bites his lower lip viciously. He wipes the blood from his mouth, advances on her and puts his hands around her throat, squeezing it.
Disturbed at Cathy not being at the meeting place, the Stranger carefully re-enters Harmony. He sees the Kid leave the saloon and goes inside. He finds Cathy’s dead body on the stairs. At dawn, he completes digging her grave and returns to his office, where he tests the gun and ties it on. He leaves the Sheriff’s badge on the desk.
Outside in the street, he is confronted by the Kid. They draw and fire simultaneously. The Kid spins his gun, restores it to his holster, then collapses dead.
The Stranger goes into the saloon and orders a whiskey, which he downs in one. The Judge and his men follow, enthusing about what they have seen. The Judge doesn’t care about losing the Kid since the Sheriff is faster, but the Stranger says that he is leaving. The Judge reminds him that he has Cathy but the Stranger says he doesn’t: she’d dead. This shocks the Judge but he is still not prepared to let the Stranger leave. He can’t work for another outfit: the Judge will kill him first.
He gives the Stranger a count of five, whilst his gunmen spread themselves around the Saloon. At the count of four, the Stranger rips into action. He kills all three gunmen quickly, but finds himself directly in front of the Judge, who has drawn a derringer. He shoots the Stranger twice at point-blank range. The Stranger presses his hands to his head, and collapses.
Number Six awakes to find himself lying on the floor of the saloon, in his Village clothing. He has on a pair of headphones and two other wires. Getting to his feet, he rips these off and looks round wildly. He sees the Judge, with the derringer and lurches at him, only to find he is a black and white cut-out. So too is the Kid’s body, on the ground outside.
Harmony is empty but for Number Six, but suddenly he hears a fragment of music on the wind. He follows a lane outside the entrance to Harmony. It leads him to a position overlooking the Village square, where the Villagers are circling.
Number Six makes his way directly to Number Two’s office. On the threshold he halts: Number two is the Judge and his assistant, Number Eight, is the Kid. By the Penny Farthing a woman, Number Twenty-Two, stands: it is Cathy. Number Six takes all this in and turns and leaves.
Number Two and Number Eight argue over the responsibility for failure. It is apparently Number Eight’s scheme – to dose Number Six with hallucinatory drugs, talk to him through microphones, create a primitive scenario where he faces danger, gets and loses love, and breaks. Number Eight blames the failure on Number Two’s impatience, forcing the crisis too soon, and getting too involved in the scenario.
They are distracted by sobs from Number Twenty-Two. When she realises they are staring at her, she runs from the Office, leaving Number Two to comment that he was not the only one to get too involved. Number Eight looks after her with hungry eyes.
At twilight, Number Twenty-Two returns to the Harmony set. She enters the saloon and lies down on the stairs, where ‘Cathy’ was found dead. A silent Number Eight appears, staring at her through the open slats of the stairs. In a harsh voice she berates him about it being over, and goes to leave. He says her name, and she stops, giving him chance to grab her around the throat.
Number Six has also returned to Harmony. He hears the scream and races into the saloon. It is Number Eight who is screaming. Number Six knocks him down and turns to the fallen Number Twenty-Two, who is dying. Her last words are that she wished it had been real.
The final player, Number Two, arrives by Mini-Moke. His appearance in the saloon triggers the final breakdown of Number Eight. Gabbling about not letting the Judge beat him again, he scuttles up the stairs, leans out over the balcony and throws himself to his death.
Number Two looks aghast at what has happened. Number Six gives him a look of utter contempt before walking away.
The Prisoner’s face races towards the screen. A pair of iron-barred doors slide across in front of it, slamming shut.