In the quiet town of Brackenridge Hollow, a series of unexplained medical emergencies begins with no clear cause—only a strange, repeating pulse that disrupts the human heart. Ronan Hale, a withdrawn former search-and-rescue tracker, and Marlowe Pike, a determined local journalist, uncover a hidden network of transmitters buried beneath the town. As the signal grows stronger, they realize it is part of a secret experiment capable of controlling human physiology. With time running out, they race to stop a full-power activation that could kill everyone in range. As buried truths surface, the town must confront betrayal, power, and the cost of silence.
