Michael Faraday, a college history professor who specializes in American terrorism, is still struggling with the loss of his FBI agent wife who died in the line of duty. When he rescues a boy named Brady Lang from the street after a horrific accident, he's drawn into the lives of the boy's parents, Oliver and Cheryl Lang. Despite their friendly demeanor and the sense of community they seem to foster, something about the Langs strikes Faraday as peculiar, leading him to suspect that they may be harboring a dangerous secret.

Driven by his own paranoia and grief, Faraday begins to investigate the Langs, delving deeper into their background. His suspicions grow as he uncovers a series of inconsistencies in Oliver’s past, which compound his doubts about their true intentions. As Faraday becomes increasingly obsessed with the idea that the Langs may be involved in a sinister plot, he finds himself entangled in a web of conspiracy that challenges his understanding of trust and fear, pitting his instincts against the evidence he uncovers.