A pair of guests, first-timer William and repeat visitor Logan arrive at Westworld with different expectations and agendas. Bernard and Quality Assurance head Theresa Cullen debate whether a recent host anomaly is contagious. Meanwhile, behavior engineer Elsie Hughes tweaks the emotions of Maeve, a madam in Sweetwater's brothel, in order to avoid a recall. Cocky programmer Lee Sizemore pitches his latest narrative to the team, but Dr. Ford has other ideas. The Man in Black conscripts a condemned man, Lawrence, to help him uncover Westworld's deepest secrets.
The story revolves around a futuristic theme park staffed by robots that can help guests live out their fantasies. The park breaks down, however, and two guests taking a Wild West adventure find themselves stalked by a gun-slinging android.