Dolores' true intentions are revealed; Bernard confronts a ghost from his past; Maeve is conflicted; Serac's voice is dominant; Caleb's role is revealed; and William faces an unexpected villain.
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 aballoon-slinging android.