As team members experience vivid hallucinations and missing time, Ryan realizes they're becoming part of a consciousness network the entity is building to fully cross into our reality. With the entity using human minds as anchors and Ryan's unique sensitivity making him the perfect final connection, he must confront the darkest corners of Mercy Hall and his own past to understand why he was drawn to this investigation—and to close the dimensional breach before the forgotten voices of Mercy Hall herald something far more terrifying.