When his younger brother Sam vanishes without a trace in the middle of the night, Max is pulled into a search that leads far beyond the walls of home. A trail of cryptic clues draws him to the Interstice Facility, a sprawling, abandoned research complex once used to study fear itself.

Inside, reality bends.

Rooms repeat. Hallways breathe. Fluorescent lights hum through endless corridors while flooded passageways echo with unseen movement. The deeper Max goes, the more the world warps into fabricated “environments” designed to measure human terror.

Somewhere within these impossible spaces, Sam is still out there.

Max must navigate shifting liminal worlds, uncover the purpose of the Interstice Program, and confront what the facility has been hiding, all while something unseen tracks his every move.