The woods surrounding the insular town of Mill Creek, West Virginia, have a habit of taking people and refusing to give them back. The National Parks Service Search and Rescue Team knows this, just like they know when you find a door in the woods, you don’t go through it. But park ranger Theo Buchanan has a knack for sticking her nose where it doesn’t belong. Determined to find the truth behind her sister Flora’s strange disappearance, she boldly steps through one such door, catching the attention of the Federal Bureau of Reality. She quickly learns how far they are willing to go to keep their secrets locked tight, even if it means silencing those who stumble upon them permanently.

Together with her journalist ex-girlfriend, a fellow ranger, a conspiracy theorist, and a rogue member of the Bureau’s Requisitions Department, Theo must brave the horrors of the Infinite Corridor and its web of connected realities to find Flora…before the Bureau does.