Fresh from facing allegations of witchcraft and murder, travelling weaver Will Rees, his heavily pregnant wife Lydia, and six adopted children take refuge in Zion, a Shaker community in rural Maine. Shortly after their arrival, screams in the night reveal a drowned body, but is it murder or an unfortunate accident? The Shaker Elders argue it was just an accident, but Rees believes otherwise. As he investigates further, more deaths follow and a young girl vanishes from the community. Haunted by nightmares for his family's safety, Rees must rush to uncover the truth before the dreams can become reality and more lives are lost. Yet can the Shaker Elders be trusted, or is an outsider involved?