Quiet office clerk Emily prepares for a nostalgic trip back to her childhood home of Asheville, only for her coworkers to terrifiedly claim the town was completely wiped out by a chemical disaster 25 years ago. Driven by memories, Emily drives into the perpetual fog surrounding the town, only to uncover a horrifying truth: the residents are all cloned consciousness loops, her own "father" is the system administrator, and she is the sole living test subject trapped in a simulated prison.