When one of America's foremost physicists vanishes during a classified experiment atop a storm-locked Colorado observatory, former CIA operative Ethan Calder is sent to find out why. FBI profiler Sienna Brooks uncovers encrypted fragments buried in the station's research logs, evidence of a leak reaching deep into federal intelligence. Outside, arms broker Damien Kessler has already deployed a private militia to seize the missing data before agents arrive. Inside, systems engineer Noah Mercer fights to wrestle back control of a compromised network as avalanches seal every exit. Trapped between a killer storm and a killer conspiracy, the survivors have one chance to expose the truth before Cascade Ridge is buried for good.