Denali Coltrane has been assigned as the Operations Manager supervising construction of a new subterranean microhabitat research facility for Solutrean Enterprises. During excavation, archaeologist Kyle Ripley discovers anomalies in underground scans potentially jeopardizing the operation. Denali decides to proceed with her usual focused and determined leadership, taking this hurdle in stride. Finding a mysterious chamber, Kyle, also a rash thrill seeker and spelunker, defies orders to hold off on any exploration, dragging Denali along with him. Underground, they stumble upon a time capsule hinting at preparations for an impending apocalypse during a long forgotten arc of humanity’s history. Denali and Kyle enlist the help of an eccentric historian along with a cryptologist turned con artist, and embark on a baffling quest taking them from underground caverns to an orbiting space station. A shroud of intrigue and secrecy unravels to reveal unfathomable ancient mysteries and a discovery that could rewrite human history. When a threat emerges, willing to do anything to keep their findings a secret, Denali and her team find themselves on the edge of outer space, fighting for survival.