As another day of fantasy plays out in Westworld - a vast, remote park where guests pay top dollar to share wild-west adventures with android "hosts" -, top programmer Bernard Lowe alerts park founder Dr. Robert Ford about incidents of aberrant behavior cropping up in some recently re-coded hosts. Meanwhile, in the Westworld town of Sweetwater, a rancher's daughter named Dolores encounters a gunslinger named Teddy in the street - but their predictable narrative is upended by the appearance of a ruthless Man in Black and, later, by a supporting host's unscripted encounter with an artifact of the outside world.

Elsie and her colleague Ashley 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. William finds an attraction he'd like to pursue and drags Logan along for the ride.

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

Maeve approaches Sweetwater's longtime outlaw Hector Escaton 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 cautions Bernard against seeking answers to questions best left unasked.