We'll just say this entire review is a spoiler.
Review:
Spence is one of the many cured patients at Ironside, a special facility. Although calling it "cured" is a bit misleading, since relapses can certainly happen. At any rate, in group therapy, he and the other patients tell each other their stories - what they were doing when they got caught up in the narrative, what they did while they were infected, and how they came to be cured and end up at Ironside. When a woman named Leila arrives at Ironside, Spence gradually befriends her, until eventually she trusts him enough to tell him that she's leaving - she's going to check on Val, the person who acted as leader in her group and reinforced the narrative. Spence decides to go with her.
