When Mark, Rachel, and their young daughter Lily move to a small Indiana town, they expect a peaceful new start. But beneath the quaint façade lies a dark secret: a community bound by an ancient covenant, loyal to the god Mithras and willing to make terrible sacrifices to maintain their protection. As Rachel's visions grow increasingly vivid and chilling, the family realizes that Lily is marked as the next offering—a fate that Mark and Rachel are determined to prevent.

Caught between escaping and uncovering the truth, Mark and Rachel must confront the cult's powerful grip, risking everything to break free from the shadow of Mithras. But even as they make their daring escape, they find that the cult's reach stretches far beyond the town's borders.