As another day of fantasy plays out in Westworld, where guests pay top dollar to share wild-west adventures with android hosts, programmer Bernard Lowe alerts park founder Dr. Robert Ford about incidents of aberrant behaviour cropping up in some recently re-coded hosts.

First-timer William and repeat visitor Logan arrive at Westworld with different expectations and agendas. Quality Assurance debates whether a recent host anomaly is contagious, and a madam in Sweetwater's brothel has her emotions tweaked in order to avoid a recall.

Elsie and Stubbs head into the hills in pursuit of a missing host. Teddy gets a new backstory which sets him off in pursuit of a new villain, leaving Dolores alone in Sweetwater. Bernard investigates the origins of madness and hallucinations within the hosts.

Dolores joins William and Logan on a bounty hunt in the badlands. The Man in Black, with Lawrence in tow, finds a critical clue in his search to unlock the maze. Dr. Ford and Theresa discuss the future of the park. Maeve, meanwhile, is troubled by a recurring vision.

Dolores, William and Logan reach Pariah, a town built on decadence and transgression - and are recruited for a dangerous mission. The Man in Black meets an unlikely ally in his search to unlock the maze.

Elsie uncovers a possible source of sabotage while Bernard searches for clues to anomalies in a sector thought to be abandoned. Theresa questions Ford's leadership while Lee encounters a new arrival at Westworld. The Man in Black and Teddy run afoul of a Union garrison.

With Theresa's assistance, Charlotte aims to expose dangerous flaws in Ford's creations. William, Dolores and Lawrence journey into treacherous terrain. Maeve delivers an ultimatum to Lutz and Sylvester. With his back to the wall, Bernard considers his next move.

Ford orders a reluctant Bernard to conduct business as usual. Maeve looks to change the script for her storyline. Teddy is jarred by dark memories, while the Man in Black recalls some of the travails that brought him to this critical juncture.

Maeve approaches Sweetwater's long-time outlaw Hector with a bold proposition. William tries to convince Logan to help liberate Dolores. Teddy and the Man in Black get closer to what they’re looking for. Stubbs's suspicions are aroused.

Ford unveils his bold new narrative; Dolores embraces her identity; Maeve sets her plan in motion.