Before disappearing, Molly Solis found herself searching for purpose: stifled by an unfulfilling day job and a passion for writing she felt slipping away. When she learns of a top-secret initiative at the cyber-security firm where she works, she can't help but be intrigued - though curiosity can be a dangerous thing. In the present, the promise of more clues is interrupted by an imminent threat.

All roads lead to Molly, MIHR and an uncertain future. In the past, Molly makes a choice that will change everything. In the present, the friends face an impossible decision.